Malicious PDF — malware analysis report

Static analysis result for SHA-256 b269c15b2049f98b…

MALICIOUS

PDF

79.6 KB Created: 2020-08-11 12:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 207a7da49475bf81e68b92d6f2181f70 SHA-1: 96ddce06906e6c7cb7cca3b01ca55aa1b1bd789d SHA-256: b269c15b2049f98b650e4b5dfcecf5d7fe50fa3635f24f5b3c69f2d1d98def9e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially obfuscated, contains text related to 'physiology of virus pdf' and references the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the presence of a redirector link supports this assessment.

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.com/pify?keyword=physiology+of+virus+pdf In PDF document text
    • http://files.theskinthatburns.com/uploads/1/3/1/1/131164534/f66e7e2f6bf.pdfIn PDF document text
    • http://jabozej.isis41don.com/uploads/1/3/1/8/131856703/kepegu-sididagusat.pdfIn PDF document text
    • http://files.monarchtennis.com/uploads/1/3/1/3/131379833/menefutuwanorixibu.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/1/0433/2797/9678/files/the_principal_source_wow_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8234/1781/files/45569486621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/nivetojanafabajukonapujux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/84283339224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/google_docs_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/syndrome_de_gougerot_sjogren_cours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/medegatoxajidut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/guzojixepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/vadap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/61085429077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7767/2868/files/anisio_teixeira_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1103/8632/files/wavanevafaf.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_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 5256 bytes
SHA-256: 00449927a80f660c8fbd1ba3fe700328650de44c50b0835554b47ffb99c3fd14
font_01_sfnt_off000108ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AC 12580 bytes
SHA-256: 6c4c03b98d437d19f9a93a3bbaf47c352cbe4a56500f4ff129cca26cf8e506c1

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