Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af7ae2ddffaa66e…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 20:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dd2035add5256aefc0db37a62c647bd SHA-1: 1b6e567d0ac91343c9b1516d66812aa3efa6b8d9 SHA-256: 6af7ae2ddffaa66e0862f18d2911e09abc2a01922492295f82ea58f4332f756c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary redirector URL is https://ttraff.ru/pify?keyword=calendario+con+numero+settimane+2019+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other Shopify links, some of which are benign. The ML classifier strongly indicated maliciousness.

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.ru/pify?keyword=calendario+con+numero+settimane+2019+pdf In PDF document text
    • http://files.shenteachers.com/uploads/1/3/2/8/132814050/zovogutepepure.pdfIn PDF document text
    • http://files.bradleyolson.net/uploads/1/3/1/4/131453894/6581222.pdfIn PDF document text
    • http://dowarisif.paolaniebla.com/uploads/1/3/0/8/130814328/891ba6d661.pdfIn PDF document text
    • http://files.brettjonesportfolio.com/uploads/1/3/2/3/132302970/fijimabuwatifubemuv.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/1/0438/6127/8885/files/tipalaremewato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/josefomibaxapafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/62065162893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/5000_daily_used_words_in_english_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/conductometric_titration_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/82979995429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8360/0806/files/the_metaphysical_poets_by_t._s._eliot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/sirapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rimudunibodosugesujusuvud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/kivikorimala.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_off000060dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 5688 bytes
SHA-256: bc745a96f474ba7a1fcf0439a4019138f4a64222ffac0b6e296a8165dd52c04f
font_01_sfnt_off00007419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7419 10944 bytes
SHA-256: a96be285e15dabebe6b9a8393ee1bc8d7fcf52b44a745dad8f20400abbffd598

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