Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c464cfcd683ab31…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 14:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bc5b94a7efae249736d919522da346b SHA-1: 38ea47314cec9c1b7d2ad87183141f89dd6ed742 SHA-256: 4c464cfcd683ab3139122f2a85841277b8e38335fda47d6c4f8626dbf75b6108
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body and embedded links suggest a lure related to 'borderline personality disorder pdf download', which redirects to a malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, 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.ru/pify?keyword=borderline+personality+disorder+pdf+download In PDF document text
    • http://suxasagi.ranejiang.com/uploads/1/3/0/7/130738993/28f47eb1a.pdfIn PDF document text
    • http://files.uusl.net/uploads/1/3/1/4/131408170/1284853.pdfIn PDF document text
    • http://files.juaj.nl/uploads/1/3/0/7/130776110/9401662.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/tewogabiwatifoxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/torrenting_rosetta_stone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/dupabatekenabozitosujij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/78580048477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/59209070368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/68119695579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/16926941851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/dadopax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/leer_caballo_de_troya_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/36955774952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/pamafadavolanazunafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/96430024401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/95178712461.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 5

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_off00006690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6690 5064 bytes
SHA-256: 1ebd470d3472c052cdaab204603335396badbe88097d464c436386568977cc2d
font_01_sfnt_off000077e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E4 10104 bytes
SHA-256: 6bc7e362d00d69dfd282f62118ca310d8ab6aa4e52362f60bf3926d25fd59e9d
font_02_sfnt_off00009a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A58 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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