Malicious PDF — malware analysis report

Static analysis result for SHA-256 04948785d2959e33…

MALICIOUS

PDF

35.2 KB Created: 2020-08-11 15:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffc1bb9c7eb8cafe26d37749f0060250 SHA-1: 5de5ccf696f3d72ee385a2b0a0b03b093d70de81 SHA-256: 04948785d2959e33fba938a49bf9e9d13749a39b8aaa8dee360b63f48454b5bd
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (`ttraff.ru`) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into downloading further content or visiting malicious sites. The presence of multiple SEO-optimized PDF links further indicates a link farm or phishing attempt.

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=encyclopedia+of+general+knowledge+by+jwt+pdf In PDF document text
    • http://files.estateart.net/uploads/1/3/0/7/130740493/1efb2e342fe28b3.pdfIn PDF document text
    • http://files.teachablemoments-ok.com/uploads/1/3/1/4/131437685/0e5b04d0fe.pdfIn PDF document text
    • http://xogim.solaris7roadshow.com/uploads/1/3/2/3/132302815/zijazudun.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/1/0436/3078/8758/files/75556187790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/tapezadojijasulijun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/polaris_trailblazer_250_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/93360940276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/fawuvup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/biodata_maker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/vinidekavumewibinaxizewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/27777954934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/11549590484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4351/1702/files/feregimikevimadizegijew.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 5

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_off00004a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A51 5576 bytes
SHA-256: 4d426e82ff1e214b358223518d51f7d84e0f47bf9abea8d3caac62d3565dc4e0
font_01_sfnt_off00005d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D72 10144 bytes
SHA-256: 71a0af9c65e172b91974a8d8a2c838d4cf988c717d1979d02aa497278379fa1a

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