Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c865f4bc68633c…

MALICIOUS

PDF

80.0 KB Created: 2021-02-18 21:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6fdcaf25a826476dedc3eb8131fe5637 SHA-1: 9f369ec6dc66a70071f6141567a44f0c67d537b5 SHA-256: e0c865f4bc68633c541ff9b8aef95e92233ff4352f71ca52e7d202bd0e908420
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 hosted on disposable domains, characteristic of a link farm or SEO manipulation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=pokemon+flash+games+online+free PDF link annotation
    • https://cdn.sqhk.co/moxoxitij/hixjfK3/vemosulevukibidivibow.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/ALT66if/ruzirokonedis.pdfIn PDF document text
    • https://nesamakamaxo.weebly.com/uploads/1/3/1/6/131636712/gotogegojobugaruw.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/ajh4AE8/the_wolfpack_brothers_sister.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/9gcyTid/pawaxerijetuvemo.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/jdigRy3/24495989482.pdfIn PDF document text
    • http://puwisagoki.22web.org/jifaxovu.pdfIn PDF document text
    • https://ludalobupum.weebly.com/uploads/1/3/4/5/134528654/7bf651fec8d1cd5.pdfIn PDF document text
    • https://kivojiwivumupu.weebly.com/uploads/1/3/4/5/134597008/4938688.pdfIn PDF document text
    • https://xakanokemuma.weebly.com/uploads/1/3/5/9/135965718/4295030.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
    • http://totiwofosu.epizy.com/free_business_card_templates_psd.pdfIn PDF document text
    • http://naremijex.epizy.com/formal_leave_of_absence_letter_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/coursera_introduction_to_marketing_quiz_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/wezobipimevapitolajeg.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/bleeping_computer_roguekiller.pdfIn PDF document text
    • http://zotuxegusam.epizy.com/26135241219.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/aether_catharsis_piano_sheet.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FB 4956 bytes
SHA-256: 2a0e82478c4d0db7ebd6a3676e4615efea7edabde9e2296f81c95a6033e90613
font_01_sfnt_off00010295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10295 9980 bytes
SHA-256: fe353afefdf1641bb251b274f5082a9c0737b11c0ac2f6ebdb3d191946b10a39
font_02_sfnt_off000124a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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