Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbdcc8777e2192d…

MALICIOUS

PDF

74.4 KB Created: 2020-12-20 04:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 578fbc9f949891676da4be85c1e8b6c1 SHA-1: d3a035f27ab488313a20a96126dbd460562d1123 SHA-256: 3dbdcc8777e2192d93eb24084a55c04a6e6fb7eac225aa33c4375d8a65eea68a
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. One prominent URL, 'https://ggtraff.ru/123?utm_term=secrets+in+death+of+a+salesman', is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests an attempt to direct users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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=secrets+in+death+of+a+salesman
    • https://cdn-cms.f-static.net/uploads/4453741/normal_5fd376dbd9e4b.pdf
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5f9050933fbed.pdf
    • https://cdn-cms.f-static.net/uploads/4476273/normal_5fd3531b81a1b.pdf
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/notif_xodum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/somisilegex/jepunatedefozokunewuna.pdf
    • https://s3.amazonaws.com/lixuduwonifa/nikenukiz.pdf
    • https://s3.amazonaws.com/dudigonifu/pefusilile.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/monster_truck_jam_atlanta_2020.pdf
    • https://s3.amazonaws.com/sikuva/cm_browser_android_app.pdf
    • https://s3.amazonaws.com/dinisemowoge/platform_film_hd_song.pdf
    • https://s3.amazonaws.com/tefelaj/fojozakubop.pdf
    • https://s3.amazonaws.com/bokexizometun/pifokijazumedazop.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/abcd_2_movie_all_song_pagalworld.pdf
    • https://s3.amazonaws.com/satuja/batman_arkham_asylum_trophy_guide.pdf
    • https://s3.amazonaws.com/wizitifowubux/ffqax_fact_sheet.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_off0000e979.bin
0c59065e67c0d0e05ad7e8fc818f545cd5ef42b9cafbd55e4f1818a82814b951		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE979 5364 bytes
font_01_sfnt_off0000fb8b.bin
dd640a9291109c3cae10ec0ca15510ec58259e944722a9cf73e5edf0e32927c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8B 9956 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.