Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f795d2e75c29481…

MALICIOUS

PDF

41.9 KB Created: 2020-08-06 14:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df769638436e2c8157d4389fb49f83b3 SHA-1: 0df37fb0e7268145a85e8824ec62bc5c1590729c SHA-256: 5f795d2e75c29481a06f1db6335ba5a0b620772f66c6e392733390306749820a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous 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 visiting a potentially harmful site, likely for phishing or malware distribution. The presence of many external links, including benign ones on Shopify, indicates a link farm strategy to improve SEO for malicious content.

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=amalgamation+of+companies+notes+pdf In PDF document text
    • http://files.springlineseafood.com/uploads/1/3/1/0/131069869/xapurusig.pdfIn PDF document text
    • http://files.surrenderedheartsnm.com/uploads/1/3/1/4/131454523/valopew.pdfIn PDF document text
    • http://files.theempoweredspoonie.com/uploads/1/3/1/6/131636728/jafujuf.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/1/0432/5815/1072/files/data_analysis_in_python_with_pandas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/80947089925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4983/4901/files/catalogo_del_sat_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/zapigumanobunavesipez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/tefeluwakakutojekira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/dorumet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/54105969873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/51740109454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/rijewadidimitaraxikuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/jigebed.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 2

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_off0000659b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659B 5368 bytes
SHA-256: acfe34365db6b6cc9724d3f3099f93b9c1872a1e4485f80006c500beaede9fec
font_01_sfnt_off000077d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 10160 bytes
SHA-256: 33b31646f7aeb81bb9b1e8d11bcdbfd1e4d29fca0b107a0fe1d40a2b08a16bfc

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