Malicious PDF — malware analysis report

Static analysis result for SHA-256 e135942be2de206b…

MALICIOUS

PDF

42.9 KB Created: 2020-08-13 14:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcca28f9a7efa59a29196b50c3c4bd70 SHA-1: 930953c3965649ec47644dcf4b3af72823bc41ae SHA-256: e135942be2de206bbb0d891747b314127c404e2999f848904840bf9ddc4311ea
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one identified as a known malicious redirector. The document body, though obfuscated, contains text related to 'strategic issues in project management pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

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.com/wb?keyword=strategic%20issues%20in%20project%20management%20pdf In PDF document text
    • http://files.wilsonhomefarms.com/uploads/1/3/2/6/132695200/dofebilunuxirulefi.pdfIn PDF document text
    • http://files.denaliarts-glassstudio.com/uploads/1/3/1/8/131856012/fakaniputepezu.pdfIn PDF document text
    • http://files.papyrology.org/uploads/1/3/0/7/130776757/rimolexupidusep_latef.pdfIn PDF document text
    • http://files.friendsofappalachia.org/uploads/1/3/2/3/132303382/nuvit-litetoz.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/1/0433/1234/9334/files/65208271037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/game_of_thrones_season_1_1080p_kickass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/37755888001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/nukilano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2980/5726/files/98379061671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/52300554874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/christmas_songs_for_choirs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/44419368500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/certificado_medico_bolivia_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/aircraft_engine_manufacturers.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 4

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_off00005ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBC 5624 bytes
SHA-256: b8c1a0ed0127a9d60b80fe238617476cfa81dafbc06de486ba9de3cd0339776c
font_01_sfnt_off000071bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BF 14388 bytes
SHA-256: e9f68321c980c1dcc9a384a071c449f315fdb776672dbe89f90b0379848eaad2

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