Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0141a09ef2736b…

MALICIOUS

PDF

37.9 KB Created: 2020-08-16 11:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 820ba3181a2a4db7735c6131e625b7b1 SHA-1: b610b041342fa4c9639c43ccdcc21b7907c8a940 SHA-256: 6e0141a09ef2736b53fdbb7a80b6f4686302a3e08ca29c5b8cfddb171284c847
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1534 Internal Spearphishing

The PDF file contains numerous links to redirector infrastructure, specifically `https://ttraff.com/pify?keyword=geography+quiz+worksheet`, which is also flagged as a credential phishing lure impersonating Microsoft Outlook. The document body, though heavily obfuscated, contains references to a geography quiz worksheet, likely serving as a pretext to encourage users to click the malicious link. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content widely.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.com/pify?keyword=geography+quiz+worksheet.
  • 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.com/pify?keyword=geography+quiz+worksheet In PDF document text
    • http://buwofux.wrobertconnor.com/uploads/1/3/1/6/131636665/57ff353bf.pdfIn PDF document text
    • http://files.aestheticon.com.au/uploads/1/3/1/4/131453574/e7d6c2.pdfIn PDF document text
    • http://files.victoriazamora.net/uploads/1/3/0/8/130874252/tasofopapofa.pdfIn PDF document text
    • http://lamam.fulloflife.ca/uploads/1/3/1/4/131437850/7cc324c57e3.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/1/0431/4651/0504/files/zexewibox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9595/6386/files/89621603856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8157/8136/files/54975710181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/simon_ielts_writing_task_1_general.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/sopuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/nojunez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/dovipuborikorawowirafekat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/buxukeruluriwikezija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4948/3420/files/book_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4573/8903/files/mod_stardew_valley.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/kaluvikigafod.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BD 5512 bytes
SHA-256: 1eba3e41413dcd1d70df03b5b07d17e850ca16c797e6d89e95317325bbb9c169
font_01_sfnt_off000066a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A2 10716 bytes
SHA-256: 182148a993e325177d0e38f52270bbac7d992297e05e0e996812e87b9eb8595a