Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a255672cf94713…

MALICIOUS

PDF

55.9 KB Created: 2020-08-19 07:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d80fdfcd3160d1b3264b13eac1ddf5dd SHA-1: d87f7b775b160b5f096b923be4d5e3a8b39d48a6 SHA-256: e2a255672cf94713cee4f2fa42cda25ff15108f951ce5b949f8e080ff68a9988
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=apex+english+12+sem+1+answers In PDF document text
    • http://files.dawnlsievers.com/uploads/1/3/1/4/131407823/vefegegaju.pdfIn PDF document text
    • http://niriru.lthinchrist.org/uploads/1/3/1/6/131636725/sotamuvemejizifaze.pdfIn PDF document text
    • http://lekaxulal.vmiengineering.com/uploads/1/3/0/7/130775045/gufawuzaviwaboratu.pdfIn PDF document text
    • http://wewaj.rambunctiouspress.org/uploads/1/3/0/8/130813528/2d8ca0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9082/8705/files/fonife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5945/3845/files/css_background_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/kapesipapulodofelinegapul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9206/6709/files/larasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/pagatalowelobef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3304/9753/files/classic_human_anatomy_in_motion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0314/0517/files/94101530172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/70939765524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/pibiduxorolewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/muxokitofepelukosot.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000932b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932B 5568 bytes
SHA-256: 74b5a4f8898ac7f771af11d23df933b243c5638e4e650a585ecea1e9c190935c
font_01_sfnt_off0000a60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA60C 13976 bytes
SHA-256: afbf23981d3c7981756cc29fc27d4dd01d6673161b69aa6a27bd2a2b4e936353

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