Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d78c09b44db174…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 02:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 332c4a90c780af23585ba58ea62c1325 SHA-1: 8062a8419f143f09c96bba717e0dcbc7503370be SHA-256: e7d78c09b44db174bd022bf3fb0936c2491679a4840e0e80c221305d439ee10f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=authentic+assessment+in+language+testing+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to academic content and the tool used to generate the PDF, suggesting a lure to disguise malicious links. The ML classifier also strongly indicated maliciousness.

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=authentic+assessment+in+language+testing+pdf In PDF document text
    • http://files.mrsmayhemshop.com/uploads/1/3/1/4/131453451/ponapakezebaxida.pdfIn PDF document text
    • http://files.themoveablechurch.org/uploads/1/3/0/8/130874128/9175303.pdfIn PDF document text
    • http://files.sarakrinitzphotography.com/uploads/1/3/1/0/131070651/2c94f9ba8f678e.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/1/0430/1262/0447/files/rosewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/44730639835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1867/1512/files/transport_stream_to_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6165/files/3769471546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/42993503510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/72820444811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/account_hacker_v3_9._9_activation_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/54264330817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/luwodesisufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/21100158710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/65200441722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/zunugulupedunaruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/fubutajudewonetasin.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_off000066cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CC 5464 bytes
SHA-256: 7cdacfafc71feb3b646dcd0edc8503e436e0f52e79547200bbcb82426277ad64
font_01_sfnt_off00007944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7944 9932 bytes
SHA-256: 38a1b78d46e5833e5d77649c7b2e073544584e4eeede4f70c4de8eda3b3c0322

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