Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bec804276aa50f2…

MALICIOUS

PDF

67.6 KB Created: 2021-01-06 12:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: eb6e59327ef37957c2faf6d0332c9e9b SHA-1: d09dbf70e1fd0afb5ee10526aff95f02564ef6c9 SHA-256: 6bec804276aa50f2a60e3e044b927463ac6708917d41cdb84c372047f2a469e8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This URL is likely used to host a phishing page or download a second-stage payload. The ML classifier and ClamAV detection further support the malicious nature of this file, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ggtraff.ru/aws?utm_term=everytime+we+touch+nightcore+remix In PDF document text
    • https://cdn-cms.f-static.net/uploads/4486215/normal_5fd6e53247c3c.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/Bgf4K2s/81020105501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f920ef035dec.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/gcjcbgc/cossacks_3_special_units.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/povelenavuviw/net_exam_2018_answer_key_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/integral_calculus_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/xowubobobamade.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/unblock_private_calls_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/vixisomovefukize.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/78905980103.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000add4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD4 5072 bytes
SHA-256: c569cac53381aeaf0279ff68f632b80b222fd716b6d7364602dbaed6b77a25fb
font_01_sfnt_off0000bf13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF13 10012 bytes
SHA-256: 824f7695389f469260bbb85abf26a5103518d571c02ac6a1c4573347256f089d
font_02_sfnt_off0000e190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE190 18776 bytes
SHA-256: 96ab3042575e6db92b7bad1aac42ed8095504d59665b3326cf7857e97d54a14f

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