Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ceacc3ca410b781…

MALICIOUS

PDF

105.1 KB Created: 2021-04-01 11:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 22bb03965eb2c55305856b5a5d5c1d3b SHA-1: a9c13d11ff46e13479cd200709d2f06ef0b386c2 SHA-256: 9ceacc3ca410b781a6412f0507e49288181087aaa13e0cda0a8f55cc11ff5f16
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which point to disposable hosting services and appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/123?utm_term=cartesian+coordinates+to+polar+form PDF link annotation
    • https://pafegesufo.weebly.com/uploads/1/3/4/7/134719460/levoxorugalupi.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/9402507.pdfIn PDF document text
    • http://gatorama.space/nfl_schedule_week_12_picks9cdu7.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/a3682f23711.pdfIn PDF document text
    • https://kedadatiwuji.weebly.com/uploads/1/3/4/8/134891749/savidorunolidanimiv.pdfIn PDF document text
    • http://digitalmicroteter.xyz/joxuli7dj6i.pdfIn PDF document text
    • https://lukogazusewof.weebly.com/uploads/1/3/4/6/134643336/5120265.pdfIn PDF document text
    • https://movojedafep.weebly.com/uploads/1/3/0/8/130814843/gofesidutaxixu_bixejolotobumo_jibifopomaxipe.pdfIn PDF document text
    • https://texifafotolatip.weebly.com/uploads/1/3/4/7/134764930/06f8e.pdfIn PDF document text
    • https://tidosivapozagul.weebly.com/uploads/1/3/4/3/134390518/b6d90a519cf42e0.pdfIn PDF document text
    • https://kagivosivozavex.weebly.com/uploads/1/3/4/7/134746508/ropawowuv.pdfIn PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/kosototilem_tiwabizopovuta_mozesab_fefopizetet.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/6760807.pdfIn PDF document text
    • https://bugupomulu.weebly.com/uploads/1/3/5/3/135396692/2124821.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cb0b788-7ee0-413a-bef6-7d99234391d9/ginsberg_howl_poem_analysis.pdfIn PDF document text
    • https://4b523d79-2bc6-404f-8e52-0acae4d2cb03.filesusr.com/ugd/fe1b41_f7b5fedae6164f569548367f5c259e11.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1efc5e-34a6-4e2c-8609-e4836bfdfeba/what_is_the_purpose_of_psychoanalytic_theory.pdfIn PDF document text
    • https://d2ea4bfc-f92a-4379-acf2-d9b69981ddb7.filesusr.com/ugd/739437_f925198fe1a5434684eb4267785dac10.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a64bad-1535-4d0b-a054-97c38be83c4e/nejazufefubusutozufe.pdfIn PDF document text
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_329fd6c1835849d984036cc18d4aed98.pdf?index=trueIn PDF document text
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_d6f72300c89645a68c45cd03ddfb2430.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2533c81c-ccfd-4df5-a37e-2d5f26906af4/tuget.pdfIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_2c268360236d4a0b94b75024a7a8d9d9.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C7F 5208 bytes
SHA-256: a73429310049d2289b7f3187aa30200b6b65d9f4bee4a76f1deb43185fc4045d
font_01_sfnt_off00014e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E1C 13724 bytes
SHA-256: 825e837428fe06e3b1fa4ef8c5050b801c2cd26f023f85b48f8a8f595cf14c8b
font_02_sfnt_off00017d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D5A 16756 bytes
SHA-256: b3bb2fc9f9de9cf49a4fa21eef6e3878398df20f950ebdafc494d329226d4fc6

Open this report in the interactive analyzer, or submit your own file for analysis.