Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e9a26d892a71bb…

MALICIOUS

PDF

52.0 KB Created: 2020-10-08 08:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4bd1a9609459cb86623246dc8cb370b7 SHA-1: f04454d0f1eecf9545e5b42746774c8200213717 SHA-256: 10e9a26d892a71bb8bc3b7a2f6502fa69c4c6f67ded8f1a8a4766e8dbc08f4f9
184 Risk Score

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://ggtraff.ru/strik?keyword=his+secret+obsession+affiliate In PDF document text
    • https://site-1048205.mozfiles.com/files/1048205/kotodewog.pdfIn PDF document text
    • https://site-1042450.mozfiles.com/files/1042450/70324917016.pdfIn PDF document text
    • https://site-1040426.mozfiles.com/files/1040426/31882075219.pdfIn PDF document text
    • https://site-1040687.mozfiles.com/files/1040687/puzorugujuredodusav.pdfIn PDF document text
    • https://site-1043321.mozfiles.com/files/1043321/1345819018.pdfIn PDF document text
    • https://site-1043805.mozfiles.com/files/1043805/tamajixo.pdfIn PDF document text
    • https://site-1039328.mozfiles.com/files/1039328/9188738838.pdfIn PDF document text
    • https://site-1038729.mozfiles.com/files/1038729/buweleka.pdfIn PDF document text
    • http://files.turquoisebalance.com/uploads/1/3/0/7/130775506/foferuxawudeto.pdfIn PDF document text
    • http://files.megaworldatmakati.com/uploads/1/3/1/1/131163635/6828682.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://uploads.strikinglycdn.com/files/277d9e0d-9c85-4982-b447-4af9c9f8c919/361385971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a39f98-4a4f-4858-a67f-9e25c9dcad5e/lusabifuduroka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1df4bde-c543-480a-84b6-63c171fb66af/gujadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53fedbd1-8b7d-4b4d-98e5-ae6005384610/zenejer.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 8

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_off0000811b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811B 4764 bytes
SHA-256: c3b4828459c30d457c0cf7cae95783fba0a2b4f9c9006972bacac221afd0f68d
font_01_sfnt_off00009148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9148 10496 bytes
SHA-256: cd479969dbb0f16a9074d241a048885c974627d17d644d1c43aa4e68d5821b66
font_02_sfnt_off0000b524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB524 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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