Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfecf35b9f57890…

MALICIOUS

PDF

63.6 KB Created: 2020-12-23 00:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 03c5220b84ad9e63a0c78da03972a6a0 SHA-1: e2081ac93c80a3273dde99419c267555a4f2f34a SHA-256: 6cfecf35b9f578900a38818fcad140056c969bcc9b54d02d5700103910c87363
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a specific location, suggesting a targeted phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/strik?utm_term=knights+inn+san+bernardino+san+bernardino+ca PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410459/normal_5fd7faebd3804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_5fd97dec01263.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/mokamoba/vurefogetukoxisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d729e28b-97f7-4099-ad86-325390e714cd/tali_romance_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f537c56f-2785-49d2-ac07-f5695453ce53/subway_surfers_hack_no_surveys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8744186c-e31c-4337-a717-489de866121c/gisulokid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76dbe7d7-559f-4035-9712-a3b161d3c908/dixabitojefogako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea759214-79ae-4cbc-abbd-bc2d05cb1038/13136524083.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/fax_cover_sheet_template_microsoft_word_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/beard_oil_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee0f1ee-e9a6-48d4-a767-dc1d589461df/coc_cheat_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db11833d-998c-487e-953e-67e922147d0d/types_of_black_birds_in_pennsylvania.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fc1fa7761e25426e17e3f30/1606548090597/lowrance_mark_4_hdi_manual.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_off0000ba94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA94 5280 bytes
SHA-256: 68874f3e95088cdc96fa8e1bcfc8cc39ec3f7bc7dc50dca0e9292e5f100753c2
font_01_sfnt_off0000cc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC87 10752 bytes
SHA-256: ca22cc3ed4af0f4880462ff6fda07d2950d5490eb77178ff735cf9e5a4f33766

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