Malicious PDF — malware analysis report

Static analysis result for SHA-256 be95d06f8c86a827…

MALICIOUS

PDF

42.9 KB Created: 2020-08-10 11:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7200d36b71ed9070d764f40e7666d77 SHA-1: 6d7c455e86477531f1c92e80db1595b486eae85c SHA-256: be95d06f8c86a8277ec9a580e25f82d32027ed26b69dca360955cde903f36576
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'anime drawing books for beginners pdf' and includes the malicious URL. The presence of a large number of external PDF links further supports a link-farming or redirection-based attack. The ML classifier also strongly flagged this PDF as malicious.

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=anime+drawing+books+for+beginners+pdf In PDF document text
    • http://files.cityofwillowriver.com/uploads/1/3/1/4/131438240/e054704a1.pdfIn PDF document text
    • http://files.viewthis247.com/uploads/1/3/2/3/132302716/1379390.pdfIn PDF document text
    • http://mawefadij.uciphideltaepsilon.org/uploads/1/3/1/3/131380345/2701cb6b180dd.pdfIn PDF document text
    • http://files.suehuitt.com/uploads/1/3/2/6/132681028/6436100.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/1/0432/5618/4992/files/51259542350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6432/6299/files/30217431013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/nadokalalexutirojeveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/ukulele_soprano_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/76921673433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/72978882192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/27911521702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3006/7865/files/numebel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/25439638818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/moruxusajuruwitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38967404473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/13598602036.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 3

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_off0000667c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667C 5612 bytes
SHA-256: 72a22fd782a4499e8e4556f0cc650afcd40b65330fd686fc5204bd6543bb43ee
font_01_sfnt_off0000798e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798E 10708 bytes
SHA-256: e7e90ebd3e0be092056c67e665acdeac47c6f27a98208dcbe0c131c4209ff62f

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