Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6a7b18f4bed4c9…

MALICIOUS

PDF

41.0 KB Created: 2020-09-20 12:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad4e8c3b63e79a5a43e173133ddc6401 SHA-1: 08c64170caf34ef7eaac4f85b2ba453ecc19e5d2 SHA-256: cd6a7b18f4bed4c9741cac5343883d982ac90fd5161da07eccebcb75190992bd
184 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/wix?keyword=tableau+online+vs+tableau+server In PDF document text
    • http://files.chawneralmshouses.co.uk/uploads/1/3/1/3/131379409/5452440d5f.pdfIn PDF document text
    • http://piluf.nggabooster.org/uploads/1/3/1/4/131438847/bodefu.pdfIn PDF document text
    • http://files.ecparksandrec.com/uploads/1/3/0/8/130814232/bowaz.pdfIn PDF document text
    • http://files.miltonkeynesmanandvan.com/uploads/1/3/0/7/130776791/vosetu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/tibobonezobufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7486/3772/files/fight_club_full_movie_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6615/4394/files/jabulikuvekawizeri.pdfIn PDF document text
    • https://0ff9ca14-73d9-449d-beb1-aec93d893dbd.filesusr.com/ugd/3e0cb9_74e3bf4b83594637bb4ad2a1f0127a73.pdf?index=trueIn PDF document text
    • https://e4e068e3-7c23-4e29-bf26-1aba3f454bff.filesusr.com/ugd/8ebb60_d514795faa614a4ba1a417d3d95260fd.pdf?index=trueIn PDF document text
    • https://a19e14d7-7652-460b-8961-5f75e8822fa7.filesusr.com/ugd/74e905_297c9c21cfa44caf86e747b915676524.pdf?index=trueIn PDF document text
    • https://7fcefb6a-ff52-4eac-b4d0-f09ddff2fa50.filesusr.com/ugd/cdb50c_c9c5dfbd4ba9409ba980e6bf26aacf9b.pdf?index=trueIn PDF document text
    • https://bea00651-bcba-4fdd-83d1-c73cabe500ec.filesusr.com/ugd/b1b3ad_13e26e93305f4cc88eb9c2d551326123.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/biomes_of_indiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/ziwubati.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5887 4708 bytes
SHA-256: 0709ad3c43a3d952cecb2f57d60525b955b032b586d8da9b2fbe53cafcb7bc3c
font_01_sfnt_off00006892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6892 9504 bytes
SHA-256: 56d9700272147c26ea9e96dd599eebc6f0c5a4cbf5060245becb3906e5a70053
font_02_sfnt_off00008920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8920 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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