Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a92424435d11a3d…

MALICIOUS

PDF

72.0 KB Created: 2021-01-25 22:19:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: aaa1faff785e808e8d0e209a4e0bbc68 SHA-1: d0e33594e06ee33e0e41d7ff7afcad533c9682fe SHA-256: 2a92424435d11a3de7c6d79e12480425300770afc1cae0f0e158d198bf7ab060
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many of which point to PDF files, suggesting a link farm or redirection mechanism. The embedded URLs likely lead to malicious content or phishing sites, aiming to trick users into downloading further malware or revealing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=bose+revolve+plus+owner%2527+s+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455399/normal_60007a02042d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496204/normal_5fe3de59e64a1.pdfIn PDF document text
    • https://rokumipizo.weebly.com/uploads/1/3/0/7/130776068/4207766.pdfIn PDF document text
    • http://vulgargirls.fun/firuligugiwupiboisryb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420224/normal_5fff6accb0028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5ffb121e28944.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501364/normal_6001c522c0d9d.pdfIn PDF document text
    • http://info-pages.ru/2azj25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412382/normal_5fc743e2daf91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413703/normal_5ff1939469d72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484399/normal_5fd1b56ad48f0.pdfIn PDF document text
    • http://antonio-ita.space/a_snake_in_the_grass_idiom_meaning_tagalogj0w7s.pdfIn PDF document text
    • http://dhl-order.info/pixel_car_drag_tune3032w.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/sosupejuxofedo/antonyme_deutsch_liste.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/how_to_cache_google_earth_data_manually.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/gmat_official_guide_2020_free.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_off0000dc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC70 5200 bytes
SHA-256: 7dedf6a6074290cfee9fa132e8098fb2aff5b297f7e3fe7454b25a6622b1c99f
font_01_sfnt_off0000ee20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE20 10808 bytes
SHA-256: 77b0c74abea128199bc04b7e2d10b371663ce56a75edb1de3105efdfcbcc669c

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