Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fc9a5b600eae58…

MALICIOUS

PDF

81.7 KB Created: 2021-09-01 14:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 861eb497033eda898e1ff5feab97d88e SHA-1: 5ce59e77036677b0703a48a442233560bbe1ea52 SHA-256: f6fc9a5b600eae58dd9ef2ee10a987c4202d556df0899f7ba085cd5ee180f100
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document exhibits characteristics of a callback phishing lure, prompting users to call a phone number for issues related to billing or security. While no scripts were explicitly extracted, the presence of numerous links to potentially compromised websites suggests an attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://rasmesafar.net/basefile/basefiles/85964529547.pdf In PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/3ac7f2c936d8c2467a50e3f6e302b68f/26836003373.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/29358739210.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/41103525772.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d25cf96553---pezitezab.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/12510067374.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/i7go19kb5duc36je8hsha7tm02/54506579203.pdfIn PDF document text
    • http://jerilyndavisrobison.com/clients/870655/File/ravixavezodurewiwogexate.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a66c2f13b---parura.pdfIn PDF document text
    • http://lemma-studio.pl/userfiles/file/datexuzavimifegaw.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/f1bead4c7037501c3770e08cbb196219/33321902020.pdfIn PDF document text
    • http://chothuexeninhbinh.net/data/dulieu/files/85993021910.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/2b7449bab681eb96ea2f1dde7ba0c35e/67396207413.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/1cb6750ede8028c76687f5d6978aa9ab/5747148840.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/98497629771.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/jozepexewumidal.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f501736c3b9---begejikusolujafipa.pdfIn PDF document text
    • http://tizianaiberti.it/userfiles/files/zotofadixawiwatebibogo.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210802235020_535706714.pdfIn PDF document text
    • http://lalinpress.com/ckfinder/userfiles/files/zilafetosuj.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/364ace55f7fd537614f19a387b0c3592/88908516403.pdfIn PDF document text
    • http://iscyber.com/userfiles/files/84644279122.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/rurhk42lcku27ilbltpfdrg5bl/daxuwenuwewi.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ec0a44842f---mudobamivarozepotozupeb.pdfIn PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/27457177800.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=washington+state+driver%27s+license+phone+numberPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E9 17056 bytes
SHA-256: f1dd370369f991ee460e26969c01484c12e7069e797b091b51ea9348d01a2845
font_01_sfnt_off00010699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10699 11296 bytes
SHA-256: e3cb268c2e7eca3a67ce56d91e7bf2138511069f8142cec7726e39c0f6d76ebf
font_02_sfnt_off00012098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12098 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.