Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a5763ce3fe7d16…

MALICIOUS

PDF

77.6 KB Created: 2020-11-27 07:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4ce99142025c30789901fcfcf33b8df SHA-1: bc69e79c7162e391ee5a93064b997e9e5fc4723b SHA-256: 68a5763ce3fe7d161b1581bc4bda9ca4c04f1157bfb7aafe7a4a50f915f69f6e
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 'ggtraff.ru'. This indicates the document's primary purpose is to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=minor+league+baseball+marketing+plant+city+fl
    • https://cdn-cms.f-static.net/uploads/4379498/normal_5fa7e767af805.pdf
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5f9c5a777fe49.pdf
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5f8fa434e0cf7.pdf
    • https://cdn-cms.f-static.net/uploads/4484624/normal_5fbaa08999b67.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0375de80-209d-4385-90f6-9e8deada30ca/xajazerigivudidekuwaz.pdf
    • https://s3.amazonaws.com/memul/maths_worksheets_grade_1.pdf
    • https://s3.amazonaws.com/mujesogi/73865699221.pdf
    • https://s3.amazonaws.com/gezizefefififa/android_tv_box_free_streaming_apps.pdf
    • https://uploads.strikinglycdn.com/files/08771e66-25cc-432c-a657-c8e119026751/jejozutibokofevijidenamuv.pdf
    • https://s3.amazonaws.com/fonazuzixagizir/kufivezusakotebutib.pdf
    • https://s3.amazonaws.com/gavapozalilup/1971488021.pdf
    • https://uploads.strikinglycdn.com/files/8a07aa99-35e3-40a5-bedd-fcc604cd30f5/wokobig.pdf
    • https://uploads.strikinglycdn.com/files/66e9df3a-85fd-4402-b5b5-47aec1d53928/google_phone_book_white_pages.pdf
    • https://s3.amazonaws.com/rewepalazamiso/fan_made_pokemon_games_for_pc_downloads.pdf
    • https://s3.amazonaws.com/minegikukovel/root_apk_download_for_android.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_off0000ef9d.bin
f7188e79407e86899ebebc8bf4f13eaaa9427d31ad526244737f45ebb0832b64
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9D 5648 bytes
font_01_sfnt_off000102d6.bin
e7a6b88e225ca8c5ca9cf51249e1187fe1779fd6f8dcae1721a9193d3d5808c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x102D6 11532 bytes