Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0e19e749da513b…

MALICIOUS

PDF

38.6 KB Created: 2020-08-03 17:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05d425e7a92f7f5d0a1c20d448ad1cb0 SHA-1: e8b7a3ee6138dfbf3acf4d156d491a4029eae732 SHA-256: 9b0e19e749da513ba0dc7bc32f08a33c743a922836b3cd09d07f82fb7a357cda
194 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a chemistry textbook. This link points to 'ttraff.ru', a known malicious redirector. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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=inter+1st+year+chemistry+book+pdf In PDF document text
    • http://files.draiochtshoppe.com/uploads/1/3/1/4/131406840/kedadu_moduvirewo_gidirajubosed.pdfIn PDF document text
    • http://files.brendaniman.com/uploads/1/3/0/7/130775707/8081515.pdfIn PDF document text
    • http://files.mrgshouse.com/uploads/1/3/0/8/130874253/fitasoxitatopu-soviv-jakari-xupifa.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/1/0436/4907/3312/files/86615297414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/70054013220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7741/files/rajifet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/4058276543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/96105958815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/23352657466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/xevomidezipidowovuxuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/invertebrate_zoology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/fikazil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/webabadanutiwar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/fopemonog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/kazamig.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 7

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_off000058ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FF 5656 bytes
SHA-256: a8a0f8033a6dcbc9f4e0fe8b878f60241730d5cb94ded20aef4eb044bee214aa
font_01_sfnt_off00006c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1A 9780 bytes
SHA-256: 091b216716bdd1bceb2dd3c91230a088718fa55836ec3c205baa1c5834d98181

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