Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b289d7330a03b4f…

MALICIOUS

PDF

53.5 KB Created: 2020-08-06 09:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bcfc408b5112166609ace1b9ccfef32 SHA-1: 16c4d2e557b543da8355e29f32e2dcd618ae6859 SHA-256: 5b289d7330a03b4f1519f7ca1fd3df1e8af2d8cea01a6b21416e5d39db2c016e
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically linking to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'sieve analysis test pdf' and the malicious URL, suggesting a lure for users to click on the link. The presence of numerous external PDF links further supports the SEO link farm tactic.

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.com/pify?keyword=sieve+analysis+test+pdf In PDF document text
    • http://files.lssucatholic.org/uploads/1/3/2/7/132712514/7917210.pdfIn PDF document text
    • http://sasumi.mardenridingclub.co.uk/uploads/1/3/0/7/130740025/zejuvakejuv-buderer-sonusivez.pdfIn PDF document text
    • http://files.heavenlybrush.com/uploads/1/3/2/7/132712358/puvit.pdfIn PDF document text
    • http://files.thecircusdrummer.com/uploads/1/3/1/4/131482950/2720165.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/1/0437/1342/9655/files/vudexatamizene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8683/1004/files/75823265422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/rojedoropurelelinekejep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6912/8354/files/59304245588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/55706529784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/north_dakota_abbreviation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/suzuki_budismo_zen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1374/files/81422720306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/fizan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/22541096776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/bonafide_student_of_institution_2020.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_off00008bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD4 5204 bytes
SHA-256: c10b020ffddd065ca06e2bf162fcefe7d92adae8aa28b70fb90511af8333341b
font_01_sfnt_off00009daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAF 13620 bytes
SHA-256: 93697aa397b491182e03501d3641d37a11585357e8597c7cdb11f39f3524a938

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