Malicious PDF — malware analysis report

Static analysis result for SHA-256 456e06b05df681a3…

MALICIOUS

PDF

63.8 KB Created: 2021-01-01 13:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a36d06d557c9c0a39f5807e73e573f8 SHA-1: b939324a5bcc45bad5361da3e594ef3e12ac661f SHA-256: 456e06b05df681a38d040888295b639be74a02c43ff371eeb64752bcea56628e
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, identifying it as a phishing trojan. It contains an embedded link to a known malicious redirector, ggtraff.ru, disguised as a search result for a washer instruction manual. The document body, though heavily obfuscated, contains keywords related to the lure. The presence of embedded URLs and the malicious redirector strongly suggest an attempt to phish credentials or deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=kenmore+elite+he3+washer+instruction+manual
    • https://cdn.sqhk.co/xasakeza/MsLjahd/best_pull_the_pin_game_app.pdf
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fcf3e62dc293.pdf
    • https://rijevolokawuja.weebly.com/uploads/1/3/4/6/134661742/livofopiduz.pdf
    • https://cdn.sqhk.co/leburogutu/hBhgjwc/77493099357.pdf
    • https://cdn-cms.f-static.net/uploads/4386076/normal_5fe74f374224e.pdf
    • https://cdn-cms.f-static.net/uploads/4402948/normal_5fc1acd19ff41.pdf
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/ea755cad.pdf
    • https://cdn-cms.f-static.net/uploads/4411701/normal_5fa2188d24304.pdf
    • https://cdn.sqhk.co/tarozawowe/Fgdiejj/jibibomigakezolosemep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sugaguxagu/dark_matter_and_dark_energy.pdf
    • https://s3.amazonaws.com/punagilelabon/nibezurek.pdf
    • https://uploads.strikinglycdn.com/files/23254879-0220-4ea5-a2ca-36a62497e4ed/dd_permanent_madness.pdf
    • https://uploads.strikinglycdn.com/files/ebc4ca25-d0fa-424b-ad40-a7d6785bd5f8/santa_clara_acceptance_rate_2019.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_off0000bb93.bin
8d73526aff4771144217c06b5536e1a7cab998f99554c7b3e1a7e5611ed96d51
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB93 5264 bytes
font_01_sfnt_off0000cd62.bin
2cea7a693e3d0e96793760171c7713a9b32f08f5a7f0e561c46fc5c38b520f11
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD62 10864 bytes