Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d35560dc280343…

MALICIOUS

PDF

41.4 KB Created: 2020-08-25 14:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45540de5cbc1cb53f605328be0465c2c SHA-1: fc137e5305a29cb84935c536a31c24b5cf5ee6a8 SHA-256: 12d35560dc280343a9aa15cc9ad4bc513a0ce8b11ebe56ebbcd462a7351ec885
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=different+gauges+of+sheet+metal'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to obscure the malicious intent. The ML classifier strongly supports the malicious verdict.

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=different+gauges+of+sheet+metal In PDF document text
    • http://files.ellanstudios.com/uploads/1/3/1/8/131857494/7239053.pdfIn PDF document text
    • http://files.sweetiepiesnapjewelry.com/uploads/1/3/0/7/130738620/2177159.pdfIn PDF document text
    • http://files.dancevibessf.com/uploads/1/3/2/7/132740805/1831432.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/1/0434/0767/1447/files/fonobusifufemib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/vipedafuwonim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0398/4547/files/printable_bingo_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95610310087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/50034453105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2127/5033/files/belajar_macro_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/8305202776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/bourn_identity_soundtrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/introduction_to_calculus_and_differential_equations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/wibabadizaxevejedakije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/40365758847.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_off000062b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 5180 bytes
SHA-256: 619cbdb1e46b345ef775ba59dccb60a169c47525167f15647a8cba010f6f8c21
font_01_sfnt_off00007437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7437 10788 bytes
SHA-256: efb50b718af930763fd5109848b91757e415e534d08312cfd8a0cdf1a4f0d3fb

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