Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c762168e28075d…

MALICIOUS

PDF

65.5 KB Created: 2021-01-11 22:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1951a84a7f48ecf5ada7877600855563 SHA-1: 55226b0d908ac3cbdb529465504ce5c801227108 SHA-256: 46c762168e28075de9497de76522755f1aeb5097bf05ef4288d811a05dca8c2d
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically targeting 'update android 10 samsung a30', suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to trick users into clicking through to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://trafffe.ru/aws?utm_term=update+android+10+samsung+a30 PDF link annotation
    • https://site-1180530.mozfiles.com/files/1180530/warcraft_3_reforged_original_game.pdfIn PDF document text
    • https://site-1175521.mozfiles.com/files/1175521/sudobamatew.pdfIn PDF document text
    • https://site-1174310.mozfiles.com/files/1174310/kaiser_np_jobs_los_angeles.pdfIn PDF document text
    • https://zosujugopaw.weebly.com/uploads/1/3/4/5/134509911/kagowanolopin.pdfIn PDF document text
    • https://mezepobavufu.weebly.com/uploads/1/3/4/7/134717124/9f366fef556.pdfIn PDF document text
    • https://site-1168326.mozfiles.com/files/1168326/space_defender_battle_infinity_3ds_review.pdfIn PDF document text
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/vuzawom-fewiduvigafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5feb11e95f9cf.pdfIn PDF document text
    • https://site-1171656.mozfiles.com/files/1171656/borebunukusipimenixifup.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/kikunojulejuj/the_emancipation_proclamation_worksheet_answers.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_off0000c33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33B 5596 bytes
SHA-256: 39bc9cb9f2ff737d2f8e85fd81fe9cebb58511eeb36a8c2b30aed68c36af94eb
font_01_sfnt_off0000d62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62E 10372 bytes
SHA-256: 67c7bebc3b31106466402784cca079e491570d211e295b50fb1e39d7ebd5961c

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