Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f92b1da8a4f66d…

MALICIOUS

PDF

44.5 KB Created: 2020-08-15 03:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a49cef94697ecd811d6d43c020610be3 SHA-1: 301916fdcf3c24b9d24105934ab88959ef1e941d SHA-256: d7f92b1da8a4f66dcd6e3152bb573596d9c21674663c8392a4659ed22988c787
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, many of which are part of a link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains references to reading reports, likely a lure to encourage users to click the malicious links. The ML classifier strongly supports the malicious nature of this PDF.

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=how+to+read+bcr+abl+quantitative+report In PDF document text
    • http://wizim.stevendavidtorres.com/uploads/1/3/0/7/130738837/b633cda7b62189.pdfIn PDF document text
    • http://files.soma-psiche.org/uploads/1/3/1/4/131455621/neguna-relaxuvefu.pdfIn PDF document text
    • http://files.thedancecentermo.com/uploads/1/3/2/6/132683252/0930d4019d5dc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/77136287893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/45226484919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/55398819406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/48450266367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/vavazukujejolajoguzer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/cardiology_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/gasotevudaxopetokozedona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8960/files/41427965273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/xujigexuwum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6221/5324/files/64653639530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/jazoramezowizekobanuzebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1459/7271/files/resuscitation_guidelines.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 3

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_off00006146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 5148 bytes
SHA-256: 0ac77517937d2ca15f93d133c8d1936879e9f71fdb74936817eb1a0e4d1494b9
font_01_sfnt_off000072db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DB 10632 bytes
SHA-256: 302d5cc279151a565d241d22239012fd46ad7ee309f7ef3a1823ee54c6e6c6c7
font_02_sfnt_off000096ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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