Malicious PDF — malware analysis report

Static analysis result for SHA-256 0481716dba1fa760…

MALICIOUS

PDF

70.9 KB Created: 2021-03-27 20:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e04937224bd43d4d69268ea7244eb012 SHA-1: ea65ca2a7542028e3f992d3b98740daad5d30162 SHA-256: 0481716dba1fa7609e2c2d30d4b7a2b372f68eb7c5a481b58d694974976f90a3
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including brand-impersonation credential phishing for Barclays. It contains numerous external links, some of which point to redirectors or potentially malicious content. The PDF's structure and content suggest it's designed to lure users into clicking links that lead to credential harvesting pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://sukorason.weebly.com/uploads/1/3/4/5/134578332/214a645042ca.pdf.
  • 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://seumenha.ru/123?utm_term=barclays+report+lost+card+number PDF link annotation
    • https://cdn.sqhk.co/lizasizova/GZjjAFw/shooting_grizzly_bear_youtube.pdfIn PDF document text
    • http://witekevotofuz.22web.org/lijep.pdfIn PDF document text
    • https://cdn.sqhk.co/bimonabozo/jcSyjb4/piano_keyboard_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/phjii6U/giribixaroziza.pdfIn PDF document text
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/214a645042ca.pdfIn PDF document text
    • https://cdn.sqhk.co/vedoreket/jbohd6v/que_es_un_bosque_tropical.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464056/normal_5ff3573220264.pdfIn PDF document text
    • https://cdn.sqhk.co/zanivuwiduvo/fqCLgcX/74270683632.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/xifagun-jurunugirus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471988/normal_60310dc332f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5fd63dac97f13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://degodev.rf.gd/89604091186.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/gutivojobiloxapizugugepu.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/pabavifujofisufivujenewi.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/the_heros_journey_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/phonic_worksheets_for_year_2.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/7824626534.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/play_home_illusion_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/29201933008.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79A 5512 bytes
SHA-256: 1c54fa0d271741baef3da858d5f1b43a841f260f0336222b87cecac6c80f50f3
font_01_sfnt_off0000ea43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA43 10784 bytes
SHA-256: 5d3928954268e2038025ac223dc66a7f0ac9ac772d8c7f4682b334509b14b54d

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