Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99e350dd8e00626…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 00:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 203dd65b3506db704e7f15d4bcea5636 SHA-1: 2185a38a97a0562a81651f790b352209b5a3dd59 SHA-256: f99e350dd8e00626b4196f66e0a57b55c8dec64eb896510f3224d8712509f3e7
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to manipulate search engine results or to host numerous phishing lures. 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=google+arts+and+culture+face+match+android In PDF document text
    • http://files.inknbeans.com/uploads/1/3/1/1/131163540/dumafili.pdfIn PDF document text
    • http://files.leoslionsden.com/uploads/1/3/0/9/130969129/3304792.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/1/0440/4248/5910/files/wordpress_developer_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2631/6455/files/bait_of_satan_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/carbohydrates_msc_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/pelowixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/ak_photos_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/fiwodenopozufujivodasov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5321/7942/files/fitanadaxadukiregopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0439/files/tepulunugamisovajovaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/36846565862.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_off00005731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5731 5468 bytes
SHA-256: c61e38df57aad39c036a759335e1ecb9eddbacefdb3b65356228e170d9092d22
font_01_sfnt_off00006999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6999 1936 bytes
SHA-256: ee898a8cc631761ed9f6d45f35ff4dee6475e52b05f3f6ad2f7eeed82fc622ab
font_02_sfnt_off000072e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 10908 bytes
SHA-256: 4d1cedc475b4f099a04368db7a5b5410885063bf84e1a509ec4977207e4bc02f

Open this report in the interactive analyzer, or submit your own file for analysis.