Malicious PDF — malware analysis report

Static analysis result for SHA-256 471a6bcb5dc4df97…

MALICIOUS

PDF

52.1 KB Created: 2020-07-26 03:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 806d316f6680efc5d0a2995c0decf6d9 SHA-1: a632575391a1dbe551437b5d76e1193d4b239848 SHA-256: 471a6bcb5dc4df97ad1dc4a2fe79ca02515e18cc342e0f6aa832cd059af14565
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to known malicious redirector infrastructure. One of the primary URLs observed is 'https://ttraff.ru/pify?keyword=50+cent+musicas', which is flagged as malicious. The document body is heavily obfuscated and appears to be junk data, but the presence of numerous links suggests a delivery mechanism for malicious content or phishing attempts.

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=50+cent+musicas In PDF document text
    • http://files.lec-psaa.com/uploads/1/3/0/7/130738912/9904651.pdfIn PDF document text
    • http://files.theekklesiacenter.com/uploads/1/3/1/6/131606670/fizabiv.pdfIn PDF document text
    • http://files.christopherpalmer.co.uk/uploads/1/3/2/3/132303077/9707717.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/1/0439/0954/6136/files/natezufiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/vekodopadekobuzojoninivax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2016/3999/files/gowumew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/midevopevevikobuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/wuparasesedasasujopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/93269121222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/32164745388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/57067849202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/zibilufoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/pefixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/walazavupe.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 6

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_off000084ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA 4760 bytes
SHA-256: dfe6175e28bd8ef474ed3dabae119afea0c84df28a0fc0759e89a55ffe99d74e
font_01_sfnt_off000094f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F5 15108 bytes
SHA-256: d2f1882b3fad7eabfb2669350e8cd996d0b7aa8f757bbc2ff94dc67e80f6642e

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