Malicious PDF — malware analysis report

Static analysis result for SHA-256 3319bb270834fc32…

MALICIOUS

PDF

59.4 KB Created: 2020-11-13 06:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37e9a4166eb1656962025b2d927ad6fd SHA-1: 1822adc5f1e5412ed372d5947d902e9d32d2a6de SHA-256: 3319bb270834fc326fc97712b1a21f9d7993449ee3e0db6f6bf823e0a16c2519
154 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, disguised as a download for 'Dr dre compton soundtrack full album download'. This indicates a phishing or social engineering attempt to trick the user into visiting a malicious site. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=dr+dre+compton+soundtrack+full+album+download
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/dc69227.pdf
    • https://mujonutuxow.weebly.com/uploads/1/3/4/3/134336111/fosuwegirusodaso.pdf
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/duxujapif_jumepolifi_luzilarumezo_zomiduxevow.pdf
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/5010517.pdf
    • https://cdn-cms.f-static.net/uploads/4393197/normal_5fad8b3d42db4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xumakomowi/new_center_school_staff.pdf
    • https://s3.amazonaws.com/jasadavebaga/hampstead_nh_school_district_calendar.pdf
    • https://uploads.strikinglycdn.com/files/cd3170e8-0361-4cde-b766-2c34ff63f003/tuvifegaxiw.pdf
    • https://s3.amazonaws.com/tajimipojimo/6396161555.pdf
    • https://uploads.strikinglycdn.com/files/b060a415-d788-439c-a5ca-6d3fe8d07755/the_resolution_for_women_free.pdf
    • https://s3.amazonaws.com/lumixi/drive_conference_2020_andy_stanley.pdf
    • https://uploads.strikinglycdn.com/files/9f85c250-4c82-4cc8-852e-824b3f5901d3/riliwijemupamav.pdf
    • https://uploads.strikinglycdn.com/files/0aed9849-7dd9-4ed0-b3f6-e5e3f900f3e8/wedding_slideshow_after_effects_template_free.pdf
    • https://uploads.strikinglycdn.com/files/6c17b6bf-1611-4941-ac44-6282d8a5a7fd/74218144619.pdf
    • https://uploads.strikinglycdn.com/files/e5c8e3d4-d4cb-4e37-a54d-ddf25554e6d9/skyrim_unbound_not_working.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_off0000ae3a.bin
219007cf3573546059f418572b59e0b911e660900e118b681ff1950c28c91a29
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE3A 5596 bytes
font_01_sfnt_off0000c142.bin
bd3d4fae05516882440d82e26310a54c818a644597f7d1eeae1e48d23a7e8194
pdf-font-stream PDF embedded font (sfnt) at offset 0xC142 9132 bytes