Malicious PDF — malware analysis report

Static analysis result for SHA-256 9248e20c86b01ec5…

MALICIOUS

PDF

48.7 KB Created: 2020-08-01 20:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e38af7a509a91f72b0c121f715110a41 SHA-1: 922f2615f6b229090bc7837b06054f7fb02a5a2c SHA-256: 9248e20c86b01ec5ab1d33a4eb2fa67d478c067796652e9a3b309f336af7cc16
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to PDF cropping and a URL that appears to be part of a link farm designed to attract search engine traffic. The ML classifier strongly indicates maliciousness. The primary attack vector is likely a phishing lure directing users to malicious infrastructure.

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=how+to+crop+pdf In PDF document text
    • http://files.thegeneralmusic.com/uploads/1/3/2/7/132712119/5213996.pdfIn PDF document text
    • http://files.cyclonejerseys.com/uploads/1/3/1/8/131856646/7449953.pdfIn PDF document text
    • http://files.truthisstrangerthansciencefiction.org/uploads/1/3/1/4/131437378/revepomemafage.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/1/0433/0687/7080/files/ruwofejimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/95276018726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6683/2534/files/kupomezofebovokirobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3590/0569/files/97319828081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/73759668648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/24313012737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/todamefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/zubuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/poxidanupogagozitejexerow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/58359122960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/52710296449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/66733823778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.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 4

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_off00008237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8237 4784 bytes
SHA-256: 8e3be092435fa81a9f6cd38ece6d69177b2ac217d74fbc85243e1a98851180f3
font_01_sfnt_off0000929f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929F 10376 bytes
SHA-256: 8cdea764df4b968c49a0a66d4780e5486c0810107441c086f4ff2c57d990795b

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