Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfbe0c00161cedf…

MALICIOUS

PDF

66.2 KB Created: 2021-01-01 04:41:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3b42c1a7519fa46bdb6953f632d87d56 SHA-1: 58c50a9444e90959fd9b106f2ee762a5ee51dd1e SHA-256: 9bfbe0c00161cedf0ea44f5d25ec37db16527d56f530fbabc9377c8772e196d3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF SEO link farm. The primary URL, 'https://trafficel.ru/123?utm_term=weber+genesis+210+manual', suggests a lure to a specific product manual, likely to deceive the user. The presence of many external links, including one to 'https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/gifitubupisaxux.pdf', indicates a potential distribution or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://trafficel.ru/123?utm_term=weber+genesis+210+manual PDF link annotation
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/gifitubupisaxux.pdfIn PDF document text
    • https://didonomomosizol.weebly.com/uploads/1/3/4/8/134892758/fcb34ff472.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/suxugipipolazog/85629835369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74d7f86-4ee3-46ed-a729-c181a97a3ed7/400_grams_to_pounds_baby.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/kedolipolal.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/bahubali_movie_video_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/zelienople_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/reporting_multiple_correspondence_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/49375318908.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/figeviluw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9224dede-c37a-4afd-a993-d357eae8ffee/nepeposiwivawapunakikeget.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/18870246822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c659897e-f49a-48e1-9d07-2e41dfde0b57/warioware_diy_showcase_wad.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_off0000c7fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FA 5484 bytes
SHA-256: e24ddd57e9184a234b1cfa7c8f3e928204d62c0835debb12d0034b43ef319fa4
font_01_sfnt_off0000da9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9F 9780 bytes
SHA-256: e0ff8b93f5287fcdd1a3f5908c9ca6f469cd3644745726f6b577b13ccb5d825b

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