Malicious PDF — malware analysis report

Static analysis result for SHA-256 b498097cb5f4ee44…

MALICIOUS

PDF

40.1 KB Created: 2020-08-07 22:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b2703a314565be236ad03371c0fd4b4 SHA-1: ad1cf703064077d5ab9c509b1de88687e72b7be2 SHA-256: b498097cb5f4ee446ad62a465be5a45c5d2a233b6de905a059d73e0603b8941d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known to host malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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/pify?keyword=biological+molecules+notes+pdf+igcse In PDF document text
    • http://sagaseneg.dorothyhoeft.com/uploads/1/3/2/7/132740405/murejog.pdfIn PDF document text
    • http://files.bagpipelesson.com/uploads/1/3/2/3/132303013/d77f29ef.pdfIn PDF document text
    • http://files.mikemillerverse.com/uploads/1/3/1/4/131410009/7c7f179eb478f17.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/69696378660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/74807336578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/58387942387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/37666282009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/836313144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/mevorubisixodas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/ruxelefol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/lenamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/mourning_s_end_part_1_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/32675531637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/simple_present_tense_worksheets_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/zuropetepoxugiw.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 2

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_off00005ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC3 5428 bytes
SHA-256: aee725f747b48ffbcf050a816911e52ca5ada455d6609a0bb9c4baded530e33c
font_01_sfnt_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 9972 bytes
SHA-256: 033db8f5bb97404f1159484938e85e2b0ab2c8862bbb93e742d742dd6cb983e3

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