Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fba3e8dd5a9496…

MALICIOUS

PDF

51.7 KB Created: 2020-07-30 02:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0582c83bf53a40c86cf4561776f03435 SHA-1: 584c3b5f2176a9d15580460f378720323ecba10f SHA-256: 30fba3e8dd5a94965f02e84f7c06b5f4a695a4fc45cb2b2660df4e89df07b048
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'work attestation'. The presence of a link farm and the ML classifier's high confidence indicate a malicious intent to redirect users to harmful content.

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=exemple+attestation+de+travail+pdf In PDF document text
    • http://files.compassionanthology.com/uploads/1/3/0/7/130775735/3167389.pdfIn PDF document text
    • http://files.adamwilliamchalmers.com/uploads/1/3/1/4/131453645/zerodukegokide_zisif_xibusuroxolalov.pdfIn PDF document text
    • http://files.studio-maru.co.uk/uploads/1/3/2/6/132681513/zunosipowu.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/1/0432/1030/9787/files/kixigesixukamemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/8410431830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/sebutumoxuvobabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/554586358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/17139041588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/50849174229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/podesigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/badazasosujizemewaxaduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/kekiraseku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4242/2440/files/96233696116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/litofovivovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/duvap.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_off000081a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A4 5060 bytes
SHA-256: b9c3ca7fc0408f91260c88a2bf8a35e85f4a5317ae3aee832adf82279ceffbf4
font_01_sfnt_off000092c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C1 14780 bytes
SHA-256: ff3f21ce57b799b8dd178857e5357c78129bf18200aec17122af449f49f01cf8

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