Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4774b229e85cbc3…

MALICIOUS

PDF

46.5 KB Created: 2020-08-11 08:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6d60b0a8c7ad78bf1775d8801e63160 SHA-1: 5231a05b037d972ae39f1283d64ac4a9dba39149 SHA-256: f4774b229e85cbc31ce39c97386ce445a463b8ba91dc527164b49cbb050e90d9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One of these links, 'https://ttraff.ru/pify?keyword=entrepreneurship+management+mba+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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=entrepreneurship+management+mba+pdf In PDF document text
    • http://files.elitesandvolleyball.com/uploads/1/3/1/6/131636866/ginolerimujogafakoni.pdfIn PDF document text
    • http://diweri.justcapsusa.com/uploads/1/3/2/8/132814930/rurobu_xejapixekiridal_zolufes_zujunopifoge.pdfIn PDF document text
    • http://files.behaviouralparenting.com/uploads/1/3/0/8/130813111/a29e6.pdfIn PDF document text
    • http://files.iamlisteningtoyou.com/uploads/1/3/2/3/132303410/d47a74b24.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/1/0434/3024/8600/files/94078532940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8342/files/gulurudojuzinigojarevemov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/kakigovezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/46889047641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/62850400069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0740/9310/files/the_definitive_arduino_uno_pinout_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/sevuwezifajareduwitutute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/rumodetesulujopurose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/verajifawidenorojog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/boremuwubutobadegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/ceat_angine_6._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1589944702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/tufavavilag.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_off00007675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7675 5520 bytes
SHA-256: 6e720777c235a5f2aac03d58e36595d347518f141a492980ffc8060dcea49e78
font_01_sfnt_off000088fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FE 10620 bytes
SHA-256: 1c1703a4a3855acb74ed65225a908267b76b747175c94c5a92a08013a524f6c9

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