Malicious PDF — malware analysis report

Static analysis result for SHA-256 376185f73847ff1a…

MALICIOUS

PDF

33.9 KB Created: 2020-08-10 11:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc06f7a3e80ca31756cc70ff65092020 SHA-1: 56b652a7c9263fb565bc7d54d601aa007472b08b SHA-256: 376185f73847ff1a184a3b78768ecadb60916050f13c9808ad56c007b2c766b0
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a URL known for malicious redirectors, which in turn points to a large collection of PDFs hosted on Shopify. The primary lure appears to be a fake download for 'Devi purana in kannada language pdf free download'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links, many pointing to potentially untrusted domains, supports a social engineering attack pattern.

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.com/pify?keyword=devi+purana+in+kannada+language+pdf+free+download In PDF document text
    • http://files.rokalumnaedst.org/uploads/1/3/0/9/130970009/b6ebf.pdfIn PDF document text
    • http://memijov.edmontongreendragon.ca/uploads/1/3/0/8/130813528/fufukediriw-potazifif-jagosuleka.pdfIn PDF document text
    • http://files.diamondwillowbiewers.com/uploads/1/3/2/6/132681891/lowewobulaw.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/1/0427/9681/0396/files/nibajofudes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/97551838340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/3557915145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xat_quantitative_aptitude_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/berliner_platz_1_deutsch_im_alltag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/24284154919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/95668749642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/76623678042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/36c_breast_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5733/2895/files/92311918975.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 5

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_off00004485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4485 5248 bytes
SHA-256: 7b2a0105a16709837c077cb7860c5c2bebad46a5963d9e258e0e750662d71359
font_01_sfnt_off00005692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5692 10216 bytes
SHA-256: b75fddb8073555c6dd72554da3ecacc905dcb1296b5f506f4828443e7f7e043b

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