Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a4f362adb3e31e…

MALICIOUS

PDF

34.2 KB Created: 2020-08-14 23:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95be458f08651a88ef841a452f6abedf SHA-1: 8fc99d75ede4354f6d0c0f7b7dae32d786a1a737 SHA-256: 30a4f362adb3e31e9cc541d9685eeb1ded8b9d623bf22c1e79ffd6e1ea5b4808
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to distribute PDFs, likely for SEO poisoning or phishing. One of the primary URLs, 'https://ttraff.cc/wb?keyword=business%20vocabulary%20in%20use%20advanced%20third%20edition%20pdf', is flagged as malicious, indicating a probable phishing or malware distribution attempt.

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.cc/wb?keyword=business%20vocabulary%20in%20use%20advanced%20third%20edition%20pdf In PDF document text
    • http://files.emmagardner.com/uploads/1/3/1/8/131856543/910248.pdfIn PDF document text
    • http://fosinuwi.perfectfixhandyman.com/uploads/1/3/1/3/131380397/nofub.pdfIn PDF document text
    • http://files.taylorabigail.com/uploads/1/3/1/6/131607027/dadipetominofevor.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/48465164240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4488/3880/files/national_anthem_usa_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7357/5841/files/porobexudilepozax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/29888316705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/92687104833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/1566171740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/a_dark_room_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/xexosudewuvuxitudivegepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/62825078718.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 4

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_off000043fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43FA 5596 bytes
SHA-256: 08d53f8b4c272eb584f5f80aa8d574a850cd6d499d4c43bc0316ce41fa4750bf
font_01_sfnt_off000056f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F7 10216 bytes
SHA-256: 2857a244e288853376832e662ebe7bde469afc192ddd7624bbcb5ba72a6d0b85

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