Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3e5af731fdbaae…

MALICIOUS

PDF

49.3 KB Created: 2020-08-11 17:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5444963cec3489d7e3060d3a9374ebf SHA-1: ab9d6b1b811382d31a7a3353278efa07ff682430 SHA-256: 1e3e5af731fdbaaeb11bf165edb78c8694c4b2af873ba1e6c0e62d106f8a149d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a primary link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=linux+command+line+reference+pdf'. This suggests the document is designed to redirect users to malicious sites under the guise of providing a Linux command line reference. The ML classifier strongly supports the malicious nature of this PDF.

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=linux+command+line+reference+pdf In PDF document text
    • http://mabebubim.sponselfoundation.org/uploads/1/3/1/4/131453494/d486bb.pdfIn PDF document text
    • http://jagafutim.gray-blog.com/uploads/1/3/1/3/131379732/1308084.pdfIn PDF document text
    • http://files.douglasbowie.ca/uploads/1/3/1/3/131383588/tobabimos-bisizapize-raxevufu.pdfIn PDF document text
    • http://files.thinkaboutouroceans.org/uploads/1/3/0/7/130740573/6b4abbb0fbb49.pdfIn PDF document text
    • http://zokanisu.tingsrydsbrukshundklubb.com/uploads/1/3/0/8/130814017/6508082.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/1/0429/5399/8489/files/75969621514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/35300202897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/69614487686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/38876460112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/lovijakedolemabugetasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/luziwapipakij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8734/7364/files/52368210011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/81145632283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/pozonejejitub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/56349777847.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 3

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_off00008082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8082 5132 bytes
SHA-256: 668d71824871359a15f0f68cfe2a5801aee6eb0670316d26559c8af142eca7ea
font_01_sfnt_off000091e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E1 11304 bytes
SHA-256: ee5380251c1ee3ffeb91fa3d53e139d7d1ed766575b13aa2d7ac6c328b3306f2

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