Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d8e7355de34834…

MALICIOUS

PDF

74.4 KB Created: 2021-03-14 20:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf1ac2e5d0c9ca99c352e7868f07ae1 SHA-1: 2039dac7b50a10e2c4f365261e0846820f78f1e8 SHA-256: f2d8e7355de348345b0beafc1758b091ab00d0b507872fb376913fdb55ac121c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, contains metadata related to PDF creation, suggesting it's a container for malicious content rather than a benign document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=rending+claws+pathfinder
    • https://cdn.sqhk.co/dedenijikal/giePueV/nukagobidijipiwof.pdf
    • http://deflecfcvy.best/bluetooth_hacker_androidh6kk8.pdf
    • https://libuxematofep.weebly.com/uploads/1/3/1/0/131070581/powupomu.pdf
    • http://vulgargirls.fun/692274345952efxs.pdf
    • http://aycotoro5.xyz/20519639167ck6q7.pdf
    • http://munupozazuwo.iblogger.org/calculus_early_transcendentals_2nd_edition_solutions.pdf
    • http://probmaka.tech/creative_inspire_t3030gkmh1.pdf
    • https://cdn.sqhk.co/dutebosatu/0Tihigc/73724146512.pdf
    • https://cdn.sqhk.co/rodesedaded/wcV8idr/dejejopo.pdf
    • http://vakekaninu.iblogger.org/nice_guidelines_myocardial_infarction_secondary_prevention.pdf
    • https://woxazalaxit.weebly.com/uploads/1/3/4/2/134235403/7296282.pdf
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/3b1d6f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jedaxopopuko/orange_county_ny_pistol_permit_reference_form.pdf
    • http://wosikomalaza.epizy.com/57140868731.pdf
    • https://uploads.strikinglycdn.com/files/3bd95b77-6cf2-48a1-9244-54ee80f8ea63/tusegafapasuzaxexus.pdf
    • https://s3.amazonaws.com/risalenefazozo/87422342813.pdf
    • http://gadejoretalul.rf.gd/angulos_rectas_triangulos_y_paralelogramos.pdf
    • https://uploads.strikinglycdn.com/files/96c132d5-3749-4714-ad3b-939fdbf10dd2/rufejujo.pdf
    • http://rupazolarena.rf.gd/how_to_adjust_steering_wheel_on_club_car_golf_cart.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e295.bin
3cf6aa2801b36afaaa769f53421825ee383815a3d83ecb114e930b058a6c85a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE295 5516 bytes
font_01_sfnt_off0000f575.bin
6024cf268ef9cbc860f938e1a600301120e4dcabf7bfe5599d7fadbbdb304889
pdf-font-stream PDF embedded font (sfnt) at offset 0xF575 11520 bytes