Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec84fec7651610ae…

MALICIOUS

PDF

54.3 KB Created: 2020-07-29 18:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40291386562f2e71f7a3d5a2941ffd5c SHA-1: c378e7f3b9dd1ee63eb4ce33c630c58e21d2bca0 SHA-256: ec84fec7651610aee2f30b03b82445cf29d4266e4009c3357af2642fb7b0a5e3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Bed cet question paper pdf'. The presence of numerous external links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://ttraff.cc/pify?keyword=bed+cet+question+paper+pdf In PDF document text
    • http://files.catherineccartwright.com/uploads/1/3/0/7/130776826/fodenu.pdfIn PDF document text
    • http://files.detailersdirect.co.uk/uploads/1/3/2/8/132815785/dinaxotegosokelumabu.pdfIn PDF document text
    • http://files.413classifieds.com/uploads/1/3/2/7/132740997/00ecdcc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/56219591845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/titoferitijiworogutumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/31102347760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/sasododumavanewisimat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/vexala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/zonikisad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/foraninupejajolitidex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/72148203720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/24021510748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/labizemutavabezumomakax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/18071533286.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 5172 bytes
SHA-256: 19b07dae0d5eeed6e1b12cd666a5d4323b19c2ee1588a034a9c47e217d0a3449
font_01_sfnt_off0000884f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884F 10572 bytes
SHA-256: 7492920ef14d4fe2b8069b43d4d3883be88a75701e962ec73107e283f119354a
font_02_sfnt_off0000ac6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC6E 9844 bytes
SHA-256: 3501555d0859a567a833cea4a5536f85c8b74058664cae4a7767c7d97ae96431

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