Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbde7331968f4b10…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 07:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffb90ea6226142862349e446783c88ed SHA-1: df2c35219a1a70cfb4d8f3f12cfc757326bbb384 SHA-256: fbde7331968f4b10c41d68df3861aa6b088cbd050f4c6bd2e22d7f382b887eba
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=monodentate+ligand+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous embedded URLs, many hosted on Shopify. The document body contains garbled text but also includes the same malicious redirector URL and several benign-looking Shopify PDF links, suggesting a lure to a malicious site under the guise of providing PDF documents. No scripts were extracted from this sample.

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=monodentate+ligand+pdf In PDF document text
    • http://rodulami.angaaefonu.net/uploads/1/3/0/9/130969656/1111379.pdfIn PDF document text
    • http://files.northforkpoa.org/uploads/1/3/2/7/132712127/dekan.pdfIn PDF document text
    • http://rasoj.scentsationalpamperingaccessories.com/uploads/1/3/1/4/131407552/3455382.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/1/0428/9835/8432/files/23063093424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/57442784856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/dinotizujosapenivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/perewowidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/gijewuruwatabefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/25667217574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/javexutonipexaravisinajox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/balibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/diweputofisabad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/jemudali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/53642502661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/31234022081.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_off00006786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 4940 bytes
SHA-256: 6ea743ae1fe4c027cfa128bdf39d2b0cc03bd0a2ecd491be5df38eebbbcd4143
font_01_sfnt_off0000787e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787E 10140 bytes
SHA-256: 9fda61513d3a18bf83902059083bc33c6f171d0c308f7ce105d58004b4bc5f64

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