Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f27fa2fedea0de…

MALICIOUS

PDF

40.9 KB Created: 2020-08-28 17:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 120c82d82d1ae361c62f77ae9e3073bb SHA-1: d2f9b2ac3184619c9787f3ba99f8698b317fc8e9 SHA-256: 13f27fa2fedea0de09fa45157800947c86cf50c4f4a5015733a81907a72ae37d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=how+to+booty+bump'. This redirector is likely used to obscure the final malicious destination and distribute further payloads. The document body and heuristics suggest a lure for free downloads, a common tactic for phishing or malware delivery.

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=how+to+booty+bump In PDF document text
    • http://rujikub.fcmhacc.com/uploads/1/3/1/4/131438477/d13af11b5d0f.pdfIn PDF document text
    • http://files.therosados.org/uploads/1/3/1/6/131636612/5511a13b8.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/1/0427/8855/2870/files/12670679374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6570/4599/files/darkness_wakes_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/87246787414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/kopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/javascript_download_blob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8747/0499/files/tensor_calculus_made_simple_taha_sochi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/17837705950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/52396210344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/amelie_piano_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/55315293063.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 1

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_off000065ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 4744 bytes
SHA-256: 3968c83533a2433898c3b002a40ff1255fee5ec6c502a82aadfb5f4ccebe7ab8
font_01_sfnt_off00007611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 9772 bytes
SHA-256: 9a70e4848f0e9ba1781731b060bcf343c181dfb9461c015e6b3dd322feb7b1fc

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