Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d5cdfd484afd92…

MALICIOUS

PDF

40.8 KB Created: 2020-08-25 21:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1beec3c629001ffb3a77be194666b9c2 SHA-1: 784b45424b9178cec34b0f5ed5195db3a9cd4289 SHA-256: 36d5cdfd484afd9222e8be876977567ac8ee69fe23e8de5669b29fda19325405
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. One of the primary links points to a known malicious redirector at 'ttraff.cc'. The ML classifier also strongly indicated maliciousness. The document body itself is largely unreadable binary data, but the embedded link structure suggests an attempt to lure users to external, potentially malicious, content.

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.cc/pify?keyword=les+fondements+du+commerce+international In PDF document text
    • http://files.richmumley.info/uploads/1/3/0/7/130739697/e0c2d5b4d25.pdfIn PDF document text
    • http://nebixut.2whatknots.com/uploads/1/3/1/4/131454215/9882858.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/1/0440/3937/2965/files/vefadolisuxerozis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1890/0888/files/the_physical_chemist_s_toolbox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/boss_audio_naa_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/65437018126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/bubosowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/81968100941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/fur_alina_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/20866943008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/tuwabiwub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/alter_ego_5_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8762/4344/files/kosavij.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_off00005e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9B 5108 bytes
SHA-256: c8ca5816deed3c00b6ade55bef60eab03376b5f8a7b2f341e8a16ebffcf49473
font_01_sfnt_off00006fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE3 12048 bytes
SHA-256: b3ee60235b80fc281d5471bf4699d27e98feebb119c840d7d475edcd03ff64e5

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