Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c0ab6a7b65b7d1…

MALICIOUS

PDF

75.6 KB Created: 2021-02-03 10:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: fa568b3d1f632f3c732440c9a6ee1afd SHA-1: 8c89acc14c5dba2fb7a69ffa60a765b324b6df37 SHA-256: 42c0ab6a7b65b7d1ed4392205b46c29a49bdef7969794d503954ce53d12bdaad
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs pointing to suspicious domains, indicating an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=launceston%20tv%20our%20guide PDF link annotation
    • http://krokoboko3.xyz/escape_the_labyrinth_bookz1e6d.pdfIn PDF document text
    • https://fexagire.weebly.com/uploads/1/3/0/7/130775556/lamuxu-lanamudilepu-jekekegogikevuv-mivexiko.pdfIn PDF document text
    • http://ndfnasg.xyz/velurukazidareswdt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426974/normal_6008095d9eab6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374359/normal_5fc715379cdb3.pdfIn PDF document text
    • https://gofupadosu.weebly.com/uploads/1/3/4/8/134853885/7862858.pdfIn PDF document text
    • http://shoplus.info/fotudefusu9343g.pdfIn PDF document text
    • http://slamelina.website/falomevefuwavovenibezootinc.pdfIn PDF document text
    • http://duxogesubuz.22web.org/baby_dance_whatsapp_status_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392441/normal_600a0308ab2a5.pdfIn PDF document text
    • http://tafelutij.22web.org/22559696977.pdfIn PDF document text
    • http://thedefenseforge.com/sivobibubezopogeze50t2c.pdfIn PDF document text
    • http://telgrm.site/295522198640bjqj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/xafaw.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/performance_parts_for_honda_fury.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/automation_anywhere_client_user_guide.pdfIn PDF document text
    • http://mufasiloxinak.epizy.com/42713635510.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_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 5076 bytes
SHA-256: 8b5bfb15cbafce18cdf1ca8702d1d636985216d1e60360d91c8de816c0687ca9
font_01_sfnt_off0000fc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1A 11096 bytes
SHA-256: 6d879708129ec5e2e080e7c88d3d518d47983e9ada0f745accf1f7b159882972

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