Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a34056bc8f78571…

MALICIOUS

PDF

69.5 KB Created: 2021-01-13 16:49:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3158f6144c61d6af1e3b52a66208f7f1 SHA-1: 777c5653a17f85a20ac5e5dc52fc13720f236f47 SHA-256: 9a34056bc8f78571a77f9c5e4d5229ba51dd1e596b1ed4fc2c310e87b2df6cca
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/wb?keyword=pulsar%20200%20ns%20sales%20figures'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffking.ru/wb?keyword=pulsar%20200%20ns%20sales%20figures In PDF document text
    • https://site-1192107.mozfiles.com/files/1192107/cake_decorating_supplies_stores_near_me.pdfIn PDF document text
    • https://site-1168192.mozfiles.com/files/1168192/wire_calculator_voltage_drop.pdfIn PDF document text
    • https://site-1177285.mozfiles.com/files/1177285/machinarium_demo_game_download.pdfIn PDF document text
    • https://site-1173730.mozfiles.com/files/1173730/futut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_5fd68b7fd5350.pdfIn PDF document text
    • https://site-1168447.mozfiles.com/files/1168447/xisebopemavoxarizarevub.pdfIn PDF document text
    • https://site-1221142.mozfiles.com/files/1221142/xutupomopuvekojuwezuloxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_5faab58648807.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pilazi/ansible_playbook_format_example.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/51964300482.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/types_of_capacitors_and_their_uses.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/21604760583.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/89415772476.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D5 5212 bytes
SHA-256: 94cd764069ea79edc3de86d24257f710461f59018558ecf18fff19f473935623
font_01_sfnt_off0000e6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 10200 bytes
SHA-256: 3ea0b7a3ebc4dbd3bba61e51f951a23f62d41fd98c454a99370f0204a9f0699d

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