Malicious PDF — malware analysis report

Static analysis result for SHA-256 172816efab8432aa…

MALICIOUS

PDF

69.3 KB Created: 2020-11-25 05:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: cef64860fe9554d0adec186c7d8272a1 SHA-1: 1c834ee097026ae15518c26e4418a722fadd5bed SHA-256: 172816efab8432aad60e0c8cb520e7371b16268efbf9f391cb03dcbce6bc4b0d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, disguised with a game-related query. This, combined with ML and ClamAV detections, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/strik?utm_term=gun+mayhem+redux+2+player+games PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/skialper_buyer_s_guide_2017_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/how_to_delete_files_from_viewer_in_jio_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/fobawojezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83f9fe83-309e-4855-92e9-646bf611cfc7/katunabemuzakofevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee3148a-8303-4547-b702-d897990d71b6/gorivejofifufofi.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/happy_birthday_wishes_kannada_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90cd25e6-9ec8-4dc8-8978-8d6215d8d7f2/besuweju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0486632f-b8a5-4c0b-bde6-c6ecc5e8804a/gajogo.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/astm_a572_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/44800896080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b9c625-c2ee-44b9-b3de-fb89ac4f0b8e/t_mobile_device_unlock_app_unlock_free_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50940ddf-c861-4fc0-a86e-46edc1beea1e/bristle_relax_analogy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e445c6-7f69-4395-88d9-9c1464ed52b9/87651107367.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/mushroom_cultivation_guide.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_off0000d245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD245 5708 bytes
SHA-256: 4a16470a0a68d64d125b32b509bd3fc8aeb285983db461aa62ef7c48c1fe20c6
font_01_sfnt_off0000e593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE593 10224 bytes
SHA-256: a0ab67bc53ee9b1c335f325327171178d05215e55cd815a4fca4b685da3b9526

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