Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0528401b73156f…

MALICIOUS

PDF

49.5 KB Created: 2020-08-24 14:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2414ff906ebf05bd8e8357f21e2c25a SHA-1: 950bc74ae5d88c387fe83b403faeb6e00675592f SHA-256: 7c0528401b73156ff4dd809cd7a887866d7671c301fc248724250542c4bd59ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a link farm. The embedded URL 'https://ttraff.ru/pify?keyword=baaton+ko+teri+song' is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to drive traffic to malicious infrastructure.

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=baaton+ko+teri+song In PDF document text
    • http://files.opeiu-local2.org/uploads/1/3/1/4/131482946/vajavowa.pdfIn PDF document text
    • http://files.gobeadz.com/uploads/1/3/1/3/131383533/kubapurikubir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/42510840527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/beliteredatonubefimag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/matplotlib_stacked_bar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2425/2071/files/7506007915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/77989797185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2543/8619/files/gadizuzunularezotuzuxazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3152/files/tunalowonolitejez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/73665072360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/pinemarokejuzukutiwu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6970 4932 bytes
SHA-256: e5d7d2513ccf7f697f37c45a917478dcadda89b3319c1bbd190ef9b31f848472
font_01_sfnt_off00007a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 14980 bytes
SHA-256: 519872324703d9d266d5c7f748a315dfce000524378d2ae6705d56d594a96815
font_02_sfnt_off0000a960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA960 3620 bytes
SHA-256: 773f6c68f3144103e89c2b2b296f840ff708326548030d662d45782cb86ce1f1

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