Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d21940cbf3735a…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 13:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52223a5c079ced29a884ada493829dbf SHA-1: cec9d9370fc48ed0a06bf588778dab4efed51f22 SHA-256: 80d21940cbf3735a0d8fefafdc83855502e02657e5f7da8ca215c9552527d3ff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body and embedded links suggest a lure to download other PDFs, potentially as part of a phishing or malware distribution scheme. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs supports the 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.ru/pify?keyword=instagram+dark+theme+android+9 In PDF document text
    • http://files.bodyprojectcollaborative.com/uploads/1/3/0/7/130775432/nabutuxofevidi_velogobovewajem.pdfIn PDF document text
    • http://files.oliviapricematchracing.com/uploads/1/3/0/8/130874633/ralinapomomug-setanodoxopomo-kikomosuzib-nuzefutojugi.pdfIn PDF document text
    • http://files.thelonestartimes.com/uploads/1/3/1/3/131379034/zevixenisazis-wufekufu.pdfIn PDF document text
    • http://files.pbsplatbrunei.com/uploads/1/3/1/4/131437891/libun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/46857832048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1697/3476/files/associao_de_capacitores_exercicios_resolvidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/bissell_power_steamer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/segiwukevenopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/9776793912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1984/6311/files/12_articles_of_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/mokunanasipenejalego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/14569218998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/vupexetiruzejol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8734/7360/files/lufolalopowunotapus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/6793751404.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B96 5152 bytes
SHA-256: 1b6e54384ac9859ce2640fba250f3e8c67dc3f12bc8d011610bc893b9ad5a18f
font_01_sfnt_off00006cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 1912 bytes
SHA-256: 80a4cfd859b9bb1e8faa36d0b2de836cd4647eeb869bd113d8e2047271df502c
font_02_sfnt_off00007608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7608 10220 bytes
SHA-256: dd6e9b67d0f25b0a0f79bf464aa9518ccdb90a726761f31288004aaaa9056a37
font_03_sfnt_off000098fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98FC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f