Malicious PDF — malware analysis report

Static analysis result for SHA-256 163b5bba02cdf3bf…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 19:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8401bd4e2dbd50943529a48eab1ae31f SHA-1: 009aacee2cb732ec9394f533bb7b1762da572c95 SHA-256: 163b5bba02cdf3bf5ea0fed32f900f7b6c8789b930beca49ad0c2605c2688724
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious due to its use of a redirector link, specifically 'https://ttraff.ru/pify?keyword=kgf+thrilling+music', which is part of a link farm strategy. The document body contains this URL along with numerous other PDF links hosted on Shopify, suggesting an attempt to disguise malicious activity within a seemingly legitimate collection of documents. The ML classifier also 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=kgf+thrilling+music In PDF document text
    • http://files.philippecorriveau.com/uploads/1/3/0/7/130740625/2ba4a52d67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/majotoxekebufalokapiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/49518068621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/lv_car_insurance_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/5799759957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/xubipevuxawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/69657776792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/gente_toxica_libro_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/80349050210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/scales_and_arpeggios_for_flute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/ganpati_atharvashirsha_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8433/2710/files/aqa_gcse_biology_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/84641828113.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA1 4708 bytes
SHA-256: 3ecd97ba1aa0527e39cc31fa9a4641b62a8a4bfe1b75108f16d858162c828fbb
font_01_sfnt_off00005f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F78 10016 bytes
SHA-256: 7ff38aa79315018083eeae6ba870f89e21108fde2dbe7a23c4af543266167ff0
font_02_sfnt_off000081aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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