Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9fab462d48da9cb…

MALICIOUS

PDF

81.9 KB Created: 2021-06-29 03:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 59531edccb7661e38c6210d8ab94b032 SHA-1: b51eda1380904365b8268a066649d5b18e2bdb1e SHA-256: a9fab462d48da9cb4a4c4972961921d274568640935ddc3df9f041d6ff91b3cb
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF file that contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs suggest an attempt to redirect the user to malicious content, potentially exploiting vulnerabilities or delivering further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071c4d422129---kekugobabib.pdf In PDF document text
    • https://mwasafat.com/uploads/files/1214715875.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/podafinekegunesusove.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/24ca8b9d21352209947374146293fbe1/11574218749.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/dagagizumiziluzekuwaxov.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16098af50a78a1---51234723386.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/93c6efc76a225095632719b6eddd5397/revaginil.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b392ad025e---19600025657.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca223441db---78268551839.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/nakipuwovuxux.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/f8d297076c9570dec6ac04db7017538b/delezutitofu.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ahdhq46q237d2f7mtc9444iuds/84032250961.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5abd79e92f---pefixujobibotijijis.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/do62j95kc8528726nshhhsjao2/55446027459.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608486936846d---23568977507.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3b25818ea---ripetejafowiwegezulopomu.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d2ad944a7---49778796780.pdfPDF link annotation
    • http://aucoindeshalles.fr/menu/file/vowojaduxiruburesokokuli.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/0d0e14f2800c53343f9ef523262251e7/2636961305.pdfIn PDF document text
    • http://hibertek.com/image/files/20210612_034401.pdfIn PDF document text
    • http://solamsys.com/userData/board/file/ledumiku.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/gizetepibo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=indian+grocery+store+overland+parkPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D5 10912 bytes
SHA-256: a76bee19414acec829f45cdf2d85ed825f3da85271a78f6e44b78ebdb9cc47dc
font_01_sfnt_off0000de09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 16980 bytes
SHA-256: a7ec6a07769394683b4b29957d997bcc151c7173f285dc65f0d4d7cd2e7a7661
font_03_sfnt_off00012255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12255 16892 bytes
SHA-256: 7bb558c053dc4e043e6ec2b99395c9865f054a5c24d8cc6c1cc1224a35179b35

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