Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80fec11caf5d371…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 19:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e189bd9ebedc0efc650c5324e6d8875 SHA-1: 9610befc4c04fd2df5726f855a878da67659f031 SHA-256: e80fec11caf5d371b74408292c9a30e49b97e82418b5e7d612a71a66b0a28eeb
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a known malicious URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'grade 4 math word problems worksheets pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=grade+4+math+word+problems+worksheets+pdf In PDF document text
    • http://files.touchdayspa.net/uploads/1/3/1/4/131453917/fipejikoxi.pdfIn PDF document text
    • http://files.brownsvilleumc.com/uploads/1/3/1/8/131871424/lorafojunopux-kapef-lidusamabol.pdfIn PDF document text
    • http://files.professionalcapitalpartners.com/uploads/1/3/1/1/131164009/d871229aecd51.pdfIn PDF document text
    • http://files.littlepoppitsphotography.com/uploads/1/3/0/7/130740573/57d8b69405.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/1/0431/6302/5557/files/tratamiento_meningitis_bacteriana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/boxejegatuxavagagawizule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7827/8563/files/26709739722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/nabafojufiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8118/6972/files/zovoxuwezobesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/jixogoboxuginusagafamekak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/talerofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/73636130505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/titejebuloxopifelaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/davonozurixipiwatizopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/3758695860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7280/5277/files/non_cognitive_skills_and_factors_in_educational_attainment.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 5696 bytes
SHA-256: a593bb87b6d3e40f1f34da4dfd10316d0c7858bab3c21cdbf2ccff83ca1e5b36
font_01_sfnt_off0000788e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788E 10352 bytes
SHA-256: 1380edfaf9ff353585011353fc3440e3b59bad7cff4e609a8d34d444cd196263

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