Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a60fc9a5e525cf…

MALICIOUS

PDF

37.2 KB Created: 2020-08-10 23:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd69fe98374d5484632fdd55021fdd87 SHA-1: b00830d76470dc55bb03c55c0461b61b8926b69e SHA-256: 27a60fc9a5e525cfae17ab8f43cd699b8f5bbb51cb446581c7622e0a28bbf64c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to improve search engine ranking for the lure. The ML classifier strongly flagged this PDF as malicious.

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=albert+camus+pdf+download In PDF document text
    • http://files.lauramartier.com/uploads/1/3/1/4/131437504/6130854.pdfIn PDF document text
    • http://files.trevorlakecomputers.com/uploads/1/3/0/7/130738562/xaruvukamodexenojis.pdfIn PDF document text
    • http://leseru.inquirybuddies.com/uploads/1/3/1/3/131383965/6578924.pdfIn PDF document text
    • http://kukewe.heacham-minors.com/uploads/1/3/0/8/130813612/vajotosibege.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/1/0436/6719/4021/files/48180968647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/revixurimadozetatorigiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/37588090541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/the_brothers_karamazov_by_fyodor_dostoyevsky_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/romeo_and_juliet_act_2_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/96179023027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/26329823792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/84544884587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/zotilumulowebub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1461/8262/files/jududuwitumedenofatuniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/mibifufaxokitepukuzumiron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/8563941719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/xalewizi.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 5

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_off00005320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5320 5520 bytes
SHA-256: 5130d9ddf4a8ce0dfad8ed2facbc62e6d10b21a6984693e627ef3c6d1313ab04
font_01_sfnt_off000065d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D9 9864 bytes
SHA-256: da8c5ef495f6d733ce93ebc9623926f1237de77ed9e91b3375c6c0c478ed6b92

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