Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba74afc0ff970b1…

MALICIOUS

PDF

40.4 KB Created: 2020-08-18 18:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f1304d9ebf07d460a7aaa2ec0478a8a3 SHA-1: 7f4072c94024d6fc8c9775d9d8cc7e76f6ab164f SHA-256: 0ba74afc0ff970b17ff96aa1eeea2d03bb73a5cef1fc96f0b210d7cd10174ba9
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=condominium+plan+pdf In PDF document text
    • http://pukevele.remotecmd.com/uploads/1/3/0/8/130814328/virewev_jowiwakogokaxip_dodofew_fajejugijig.pdfIn PDF document text
    • http://bubepimid.gladwinharrisoncatholic.com/uploads/1/3/0/7/130740141/2372698.pdfIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/54436576380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/40495850110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/nepojodudopafafupuzuwebon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/17909643173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/69242874902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/98351015737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4405/2885/files/xijezizafobopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/xupofagawupepekane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/nutricion_enteral_y_parenteral_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/dabofufuladeguji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9206/1851/files/kevowejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/15916969018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/togobosu.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 6

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_off0000627c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627C 4816 bytes
SHA-256: 8472e220191f059bd2d05bd4a14a15b125011d1e49f85853156a3bc0fac3ae7d
font_01_sfnt_off000072c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 9924 bytes
SHA-256: f82d189f2337200a545810890a78f914cc57ee30fa716fda3f7462a0d118c265

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