Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fca2a5383c04750…

MALICIOUS

PDF

52.4 KB Created: 2020-08-18 16:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25a332501fc49f789cb8354d5f0924db SHA-1: d367863d199927f37b23dcddffaf124d7df6cca7 SHA-256: 1fca2a5383c047501dae29a69e7840480f64b7496848ebce757330e3b681cab2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate content, but the primary link redirects to a known malicious domain. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting a social engineering lure to drive traffic to a potentially harmful site.

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=dreams+malayalam+movie+songs+320kbps+free In PDF document text
    • http://files.21cclcdm.com/uploads/1/3/1/3/131379730/5081168.pdfIn PDF document text
    • http://files.amandakdavidson.com/uploads/1/3/1/4/131407802/vofinix.pdfIn PDF document text
    • http://files.sayitintheyardfl.com/uploads/1/3/1/3/131380848/vaxoxizux_xoxudavimewarak_zomorog.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/1/0433/4632/9750/files/salipugetefezidubow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/40389185267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/cher_lloyd_oath_lyric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9764/4444/files/silajogiwuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/lixanavuzobetonebunofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/48987562013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/4014272551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1644/4311/files/81252260776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7189/files/garuzodijufur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/xagoneserame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/98323871988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/fixolepa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000846e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846E 6024 bytes
SHA-256: f03fa381204e3b699795905beef3d380e530eee13c36d45b7543dd7a32be7ecd
font_01_sfnt_off000098f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F4 13940 bytes
SHA-256: 1b1afbcc4b4eabd96654ad3c520ed03ed149b75c3443025b94cc9bd8b1e58b31

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