Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5975eb0e8ebf921…

MALICIOUS

PDF

34.0 KB Created: 2020-08-06 20:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1686bb696eaeca3e74d375cc02574c7b SHA-1: 39372611c9e7ada96822747e5f1a4f8a0bab1c0b SHA-256: a5975eb0e8ebf9219c535e1a4a794825ee1077afc9882be8ca6c668005ce879c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the string "cashflow game pdf" and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=cashflow+game+pdf In PDF document text
    • http://files.sarahmacillustration.com/uploads/1/3/0/7/130775918/6504774.pdfIn PDF document text
    • http://files.muellerhomeenvironment.com/uploads/1/3/1/6/131607103/c4118120827f703.pdfIn PDF document text
    • http://files.cospempowered.org/uploads/1/3/1/3/131384101/4968865.pdfIn PDF document text
    • http://files.centennialconcrete.org/uploads/1/3/1/8/131856170/nituvoronagal.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/1/0432/3901/4562/files/15872291545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/61782732935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/15315678531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/98344144941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4442/1282/files/vikapubitarasedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/munevufesuzulonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/celestina_castellano_antiguo_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/34796043704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/garejapajitadeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/megazutikubujatagem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/12065878168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/denedawijamewuvuxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/port_authority_bus_terminal_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.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_off000047de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DE 5356 bytes
SHA-256: a1d849fa9b81cc4570df4ff3edfc6d41ecc881e768baa4b0dde6df077f848c53
font_01_sfnt_off00005a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A08 10108 bytes
SHA-256: 100919b399bd0a5d7ecf96dbb2ecb528d7bd7ec5d17230743bfd298485173d31

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