Malicious PDF — malware analysis report

Static analysis result for SHA-256 85eb4780cce0846b…

MALICIOUS

PDF

41.2 KB Created: 2020-08-25 05:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a2aff373bf42a99db195205b8ef9006 SHA-1: ebf3746e5e47bad6b049d6774daf8f588c117b3c SHA-256: 85eb4780cce0846bb25d3918a5717a3ee2ffbde86cb396ff43eb34c93bf198db
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service that ultimately leads to malicious content, disguised as a game trophy guide. The heuristic firings indicate a malicious redirector and a link farm, suggesting an attempt to distribute further malware or phishing content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.cc/pify?keyword=assassin%2527+s+creed+liberation+ps3+trophy+guide In PDF document text
    • http://files.autochthonamericanpeoplenation.com/uploads/1/3/1/8/131856285/jupule.pdfIn PDF document text
    • http://files.snazzycakesedibleart.com/uploads/1/3/2/6/132681482/6102841.pdfIn PDF document text
    • http://nonolos.solutionsforenergy.co.uk/uploads/1/3/0/7/130740596/nunololo_jemibumirigux_novokovir.pdfIn PDF document text
    • http://files.salsamama.org/uploads/1/3/2/6/132695361/2b30dd65f5dd.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/1/0434/9224/5666/files/nokasabetof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/5075946299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xajubebajodefemun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2176/2723/files/abbreviation_worksheet_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/49006105737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9681/6282/files/buzakirad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/secondlife_grid_status.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5986/1909/files/jenolodasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/73730571035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/skyrim_filled_black_soul_gem.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 6

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_off00006078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 5764 bytes
SHA-256: 60bcada79b875aaa993e8bc8f75117819ef544876ab9b3b16428615e32ef65c4
font_01_sfnt_off0000740a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740A 10244 bytes
SHA-256: d9a2650d65cf3ad4b7179c721c2fec44dcd255878254188e77e2b10fa160e97f

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