Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cd042faa8c7e42…

MALICIOUS

PDF

47.2 KB Created: 2020-08-05 11:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23bd4aaecad0a2abc5910f7713d9e7a7 SHA-1: 3409e2eb0342508298e3bda4872f894e18776367 SHA-256: b2cd042faa8c7e421a79188c7c8bf9477963cd83cbc715617b63eff0a0472b23
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=arboretum+board+game+rules+pdf'. It also features a PDF link farm, with multiple links hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking Shopify URL, suggesting a lure to download a file.

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=arboretum+board+game+rules+pdf In PDF document text
    • http://files.dartmouthmountaineering.org/uploads/1/3/2/6/132681670/8198414.pdfIn PDF document text
    • http://files.prtesol.org/uploads/1/3/1/8/131856907/9029410.pdfIn PDF document text
    • http://files.joysmith.net/uploads/1/3/0/7/130775557/xubitepojalavogok.pdfIn PDF document text
    • http://files.lady-arlete.com/uploads/1/3/1/8/131872178/rafefalomu-fiferefoxu.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/1/0433/4131/6264/files/minidipivuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/gogezagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/wufoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/rebanuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/vepomidibasarojexomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/31709817564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/pekonolejova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/investment_science_luenberger_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/zozaguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5102/2501/files/tacos_al_pastor_slow_cooker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/boostrix_package_insert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/gupesegiron.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 7

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_off00007927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7927 5492 bytes
SHA-256: 64a114be88d958aacaf9230d69680937bad05a05c7633559a35b56c33f28f088
font_01_sfnt_off00008bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 10632 bytes
SHA-256: b009fdab623197036163ebcc389bceb7dd6c23bba6f1220a93ca96bc166b4397

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