Malicious PDF — malware analysis report

Static analysis result for SHA-256 84bfb8d4c4280975…

MALICIOUS

PDF

47.2 KB Created: 2020-08-18 23:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 106f095cfc5c13b8bac778be36d173bb SHA-1: 582836078aa32f3e7ce7cd66013a064bdcc51864 SHA-256: 84bfb8d4c42809751e103cd4bb283f648e6a6f1f47b53a61999b7730514e89b1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains the same lure text as the redirector URL, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm.

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=debt+payoff+calculator+spreadsheet In PDF document text
    • http://gekogi.asimpleido.net/uploads/1/3/0/8/130874431/1963282.pdfIn PDF document text
    • http://kelepazok.chalkidiki-villas.com/uploads/1/3/0/8/130874376/9541746.pdfIn PDF document text
    • http://zodipuv.gardenclubofyarmouth.org/uploads/1/3/2/7/132710712/7638749.pdfIn PDF document text
    • http://files.derekleebarton.com/uploads/1/3/1/4/131453194/baloxo.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/1/0430/7740/2778/files/75780218827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/30808965988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/pilolipidum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/25068736114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/definition_of_auditor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0472/6168/files/acknowledgement_of_receipt_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1167/0179/files/algebra_2_final_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4638/5317/files/wedixudema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/fojukoguga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/44571713731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/golawaruvoveb.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 4

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_off000079d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D4 5484 bytes
SHA-256: 07fdd9f143a7ecf4fe870676687df7f9c72f520345cb64c94f1e48f9dbf4e71b
font_01_sfnt_off00008c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C71 10332 bytes
SHA-256: 46055958a29e23a9f7c6feca982d8b91d10eb1a2a939860680502e2c6bf1964e

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