Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0b46b496389f29…

MALICIOUS

PDF

35.0 KB Created: 2020-08-13 12:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bdb6bd6a8db2998b05b3e9e3a1d15bf0 SHA-1: 2505dfa5b780ce2f451529d8e19e3f96c926d5fd SHA-256: 9c0b46b496389f29671896517f3ac215ff9cf3f7e17e68ad04e05a0720321b1c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/wb?keyword=english%20phrasal%20verbs%20in%20use%20cambridge%20pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering attempt to drive traffic to malicious infrastructure.

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/wb?keyword=english%20phrasal%20verbs%20in%20use%20cambridge%20pdf In PDF document text
    • http://nabejupa.makingwithwords.com/uploads/1/3/2/7/132740541/zotavesivurijul-zixobirexajuso-todofulepep-tikuleze.pdfIn PDF document text
    • http://files.happycamperllc.com/uploads/1/3/0/7/130740553/3305569.pdfIn PDF document text
    • http://fozutuw.humanehomesnc.com/uploads/1/3/1/4/131453133/benudaxulaxe.pdfIn PDF document text
    • http://pumepabe.peterdumbreck.com/uploads/1/3/0/7/130775350/62717ceda477.pdfIn PDF document text
    • http://files.calliebell.com/uploads/1/3/2/6/132681832/6062104.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/1/0432/6467/1906/files/let_me_ride_that_donkey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8188/files/dmv_dl_44.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/52923490156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/67455498047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/us_cellular_rebate_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/44120069321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/46653341178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/wawutas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0950/6471/files/gujabofavimemife.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 3

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_off00004a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A03 5724 bytes
SHA-256: 744f259044e771dc670ead82ac965cc25d49d627f31de36185948cfafbf0d8a7
font_01_sfnt_off00005d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 9876 bytes
SHA-256: e2197da3ee6b05e71eba3d2de29aa5bcba932b9c78726567b9ab1f341b1391c0

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