Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3b699495f5f83a…

MALICIOUS

PDF

49.8 KB Created: 2020-08-04 06:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 854c1ee87c0fd78b6a7408885d14d16a SHA-1: 8fc8a2ca7260c4bd9946915ad972173b9bb6ac29 SHA-256: 0a3b699495f5f83ab28f21bd3e4deb7603665524cf80ac1a43e717791b892438
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose of the file is to lure users to malicious sites, likely for phishing or malware distribution.

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=ciaphas+cain+saviour+of+the+imperium+pdf In PDF document text
    • http://files.sophiebrenneman.com/uploads/1/3/2/6/132695492/zatoxur.pdfIn PDF document text
    • http://files.mygreenvalley.net/uploads/1/3/2/6/132696406/tukobipiratolupepo.pdfIn PDF document text
    • http://files.johndorian.com/uploads/1/3/0/7/130738765/6313104.pdfIn PDF document text
    • http://jopebafim.pchsmustang5k.com/uploads/1/3/0/7/130776054/9110048.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/1/0433/0048/7332/files/67870776437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/1240697967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/calendario_serie_a_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/55316031998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/mepeguguvijimedimudatexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/wolub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/nodoguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0005/3408/files/gusiwunulilupinofekov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/77869433798.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_off00008621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8621 5328 bytes
SHA-256: ccbe357d871240d8ca6f5524024421d27f594601eb0acf440d12ae032bbbd521
font_01_sfnt_off00009816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9816 9980 bytes
SHA-256: 31475a06ce362dc075fcc96f80c5198e161fad7cd002f28efc17c60aebb3ffff

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