Malicious PDF — malware analysis report

Static analysis result for SHA-256 91917c06401a8e54…

MALICIOUS

PDF

33.2 KB Created: 2020-08-12 19:33:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd2a6ebfa8ea2e9e8302ab2a17933c9d SHA-1: 55209db4e9fea8062943d5cb4182ff9ff82af939 SHA-256: 91917c06401a8e547da270fbc565d4ffc6139bcfd0cb3b4b75f956a18a78a435
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=amrutanubhav+marathi+pdf', which is a strong indicator of a phishing or redirection attempt. The presence of a link farm suggests an effort to distribute malicious content across multiple domains.

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.com/pify?keyword=amrutanubhav+marathi+pdf In PDF document text
    • http://files.seedssown.org/uploads/1/3/1/4/131483098/sirexojirosu.pdfIn PDF document text
    • http://kotumil.lorrainepearl.com/uploads/1/3/1/4/131452976/somipekidolazix_davokulutefexub_puzesebujote.pdfIn PDF document text
    • http://files.coastalleadership.net/uploads/1/3/0/8/130874676/9627383.pdfIn PDF document text
    • http://files.shoprosethorn.com/uploads/1/3/0/7/130776460/6b2a70.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/1/0433/0687/7080/files/78491346320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/jelivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6601/1298/files/sbi_clerk_2020_exam_syllabus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/bikigebotipesusaxupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/ruzinawugajuxutifepobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6464/0159/files/91429271132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/46856185949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/centrales_hidroelectricas_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9429/3142/files/wavopufatif.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 6

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_off0000448a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x448A 5260 bytes
SHA-256: 20704224b273a64db8ff75e085a86f5d64362eccd2336ddfdd1afa115515b604
font_01_sfnt_off0000563c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x563C 9964 bytes
SHA-256: 8c652d641e109d06f7477bb63623896e817f3ad52e829b3c6852acbd2fb81eb7

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