Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc4674476e0d6c3…

MALICIOUS

PDF

38.3 KB Created: 2020-08-20 00:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a08a0e11759de3f377af06c4a7644db SHA-1: fa852fab24129e69d5d8fd014896df19cd345260 SHA-256: bdc4674476e0d6c3cdb0c67c4a07ba173cbbd37b229eb703c42389f5b6772c3f
194 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to a known malicious redirector, suggesting an attempt to lead the user to harmful content. The ML classifier also strongly indicates maliciousness. The document body, though partially corrupted, contains text related to a 'world cup champion cricket game' and a URL that appears to be part of a redirection scheme.

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.cc/pify?keyword=world+cup+champion+cricket+game In PDF document text
    • http://dawuxejop.tavisdupreez.com/uploads/1/3/1/4/131438304/migakiwutekufalawez.pdfIn PDF document text
    • http://files.virtueswork.com/uploads/1/3/0/8/130815115/7855039.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/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3928/files/16443910064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/93635493352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3221/files/45439660482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/63272105713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/92090058323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/99520333091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/amoeba_sisters_enzymes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1865/files/example_of_bibliographic_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/biosensores_ambientales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/autism_spectrum_rating_scale.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 8

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_off00005557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5557 5388 bytes
SHA-256: c21e9ca5aac8932903e8f6ff00d733d6dfce7e1d78228238ab889bb92e23c94d
font_01_sfnt_off00006792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 11420 bytes
SHA-256: 77fda2d020b2ec084d2eeb3588af5a10205346dee0afe4cc09497a84425e5e28

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