Malicious PDF — malware analysis report

Static analysis result for SHA-256 151fc32b33967b4a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-04 20:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bdbacc94f3ff54188a8f463f12ac648 SHA-1: f2d9e8b922fb29e5002d2a337051906dfc476880 SHA-256: 151fc32b33967b4adbf5dd6625db92086562653767dd4081f2dd16fd46f4520d
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text that appears to be a lure for 'acoustic guitar lessons pdf'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=acoustic+guitar+lessons+pdf, which is also flagged by heuristics as a malicious redirector. The presence of many links suggests an attempt to distribute malicious content or phish users.

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=acoustic+guitar+lessons+pdf In PDF document text
    • http://files.bitsnpiecesofme.com/uploads/1/3/2/3/132303071/9829e0a397c1.pdfIn PDF document text
    • http://files.aoptech.org/uploads/1/3/1/8/131872178/541b25cfcb64.pdfIn PDF document text
    • http://files.heavencanbefound.com/uploads/1/3/1/3/131384018/tizalunovemili.pdfIn PDF document text
    • http://files.mrucubsdanceteam.com/uploads/1/3/1/3/131398095/abb70ece949.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/1/0429/6815/4278/files/tejimenezekinofaxaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/tipos_de_anemias_veterinaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6255/7856/files/3._5_wizard_spells.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/57467028896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/libro_el_bogotazo_memorias_del_olvido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0422/files/denalabeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/3097581202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/63402094300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/kivulowag.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 5312 bytes
SHA-256: 012fe077347f680787d21cf30833e44aaa676f5bc71feb784af1e6b669e7ae01
font_01_sfnt_off000081cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CC 10024 bytes
SHA-256: de989a22bd4e1bd475156879708cd87a51273492c4c2da413ebf78e75c72e669

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