Malicious PDF — malware analysis report

Static analysis result for SHA-256 8307a3ad7bc68d89…

MALICIOUS

PDF

109.9 KB Created: 2020-11-23 01:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64d7f05e3f779e9322f1af1004d33f9f SHA-1: 5d1b1f32bea31efb993493345789ee4fc4e0a9d4 SHA-256: 8307a3ad7bc68d899bdd40cfb8925fc8f5b5f85cf973c4623304207b0d3ab126
194 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, directing the user to a known malicious redirector. The embedded URL `https://cctraff.ru/123?utm_term=3rd+gen+trans+am+interior` is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and malicious URL suggest it's designed to lead the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://cctraff.ru/123?utm_term=3rd+gen+trans+am+interior
    • https://jitogemokafizal.weebly.com/uploads/1/3/4/7/134737933/kiwafaxilarup.pdf
    • https://cdn-cms.f-static.net/uploads/4405467/normal_5f984e6be2aa5.pdf
    • https://kumufovuteli.weebly.com/uploads/1/3/4/6/134607328/878198.pdf
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/jewaba.pdf
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5f98649046a2f.pdf
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5fb2e10ada003.pdf
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bezutu/virgin_mobile_flip_phones_target.pdf
    • https://uploads.strikinglycdn.com/files/016c60bf-beb6-40c2-8324-109104c8c6e9/konerejevikamewasurop.pdf
    • https://uploads.strikinglycdn.com/files/81af6f34-d8d0-4129-92df-6919af834ac3/57693134620.pdf
    • https://uploads.strikinglycdn.com/files/827964b0-ef96-46f8-a6e5-4e18b7d68316/29579859356.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001616c.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1616C 6440 bytes
font_01_sfnt_off00017160.bin
6aaa36c8082d9f303350a5887d44c2f0d8471989424fe4b01a3d855e1e03086b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17160 5184 bytes
font_02_sfnt_off000182e4.bin
b9464ff4a89f7f896d078f291d338aa295022ceeaf62094a1a9dddd8c928af29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x182E4 11628 bytes

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