Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d7419672ac706a…

MALICIOUS

PDF

79.6 KB Created: 2021-09-20 06:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a7aa19453bed83bcd6c0387a881b34e8 SHA-1: 996d65fd245683665d3ce930cef400fdce7bac64 SHA-256: 60d7419672ac706a0dd8d17a54e902f30f6e88312813d5673dae2e1830d7494c
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was identified as malicious by ML classifiers and ClamAV. The heuristic 'SE_CALLBACK_LURE' indicates the document's content is designed to trick users into calling a phone number, a common tactic in callback phishing and tech-support scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it acts as a lure to external malicious sites, potentially leading to further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mawaevents.com/uploads/file/bulepabimuvufewapepivovux.pdf In PDF document text
    • http://bienbao.net/uploads/files/kuxijafokuxaxolipisodolum.pdfIn PDF document text
    • http://www.giuseppe.ru/ckfinder/userfiles/files/xosisoz.pdfIn PDF document text
    • https://www.channeloflove.com/ckfinder/userfiles/files/motatomajavofiwir.pdfIn PDF document text
    • http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/88766472151.pdfIn PDF document text
    • http://www.protectakoteasia.com/ckfinder/userfiles/files/mafaladipizasidurav.pdfIn PDF document text
    • https://guineaservicesproviders.com/gsp/files/90800436963.pdfIn PDF document text
    • http://ombs.ru/uploads/files/10183396978.pdfIn PDF document text
    • https://jackinthegym.com/uploads/files/202109060220263222.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/71c2f01f861760eb61a5fc8b85bbd5f3/56575974248.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/busilovipegosiwozagegufi.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/nunugebinaxazavuza.pdfIn PDF document text
    • http://hkxhjfc.ltd/uploads/files/20210912055448.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/47897824289.pdfIn PDF document text
    • http://tafgambiatours.com/userfiles/file/pozivi.pdfIn PDF document text
    • http://roomyab.ir/basefile/roomyabir/files/tadosefixogusipifi.pdfIn PDF document text
    • http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2ead382a1---29794497659.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/bolefawuzigudejetup.pdfIn PDF document text
    • http://oiseau-bleu-morzine.com/userfiles/file/1709693811.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/54608089613821821d55a.pdfIn PDF document text
    • https://behagi.eus/files/galeria/files/35183759791.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/fasebikixenovit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+do+you+draw+on+pictures+on+androidPDF 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_off0000cfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EC 10752 bytes
SHA-256: 5d8561765845f08ff862746cdfc5b2d8b049898934a4fbc0ebac9449c209d3f8
font_02_sfnt_off000100d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D0 18212 bytes
SHA-256: c3e7eda6e35d0050d07bc7934938cf42f6161158b15a737329ef9316ce4d32d2