Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7d9184f47ed550…

MALICIOUS

PDF

67.4 KB Created: 2020-12-28 07:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a9aecae57f4905abdcb2f0cd13887e90 SHA-1: 89bd01ae7150dd2788fc0f405cc652bcdc77f434 SHA-256: 9f7d9184f47ed5507a0d8e749171f262bace7e67527a66f79cb72a3cd4c1fd9c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a phishing page or a payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/wb?keyword=goat%20simulator%20ps4%20controls In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_5fa9cb1ec64ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411252/normal_5fe1389438432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_5fb5220532637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463005/normal_5fd0f0870d748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5f9723945a1cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464871/normal_5fb48f9c8ef20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/31230dc4-4125-4bf8-848a-808e8ad608e8/bofizexusabipomeninafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54caac0-a452-4e35-bf04-509754a134d4/deniz_stnde_fener_mp3_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe1c3597-a3ec-4c12-9de1-30a2419bebbb/muziximuranopobimen.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/among_us_pc_2019._7._4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f18045d-2da8-4d17-8583-6698c8774ada/green_forest_in_latin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac02b02e-e09e-4996-a226-5518ffea86b0/fulomutalurarokate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d583fc9-3c48-44a6-a9c5-e30364dcd387/jomepu.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/94199958405.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/free_pandora_music_radio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fef83fa8-7215-4b71-bd1a-0705c91d363b/best_iptv_review_2019.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_off0000ca92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA92 5200 bytes
SHA-256: ce78c54851798b80704480372dd7b20bb2f3b6bf1efdcee94d7f39b2f534dc78
font_01_sfnt_off0000dc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC35 10816 bytes
SHA-256: a407570c15e5a2f85cf6f3ddc0d8899bfae8237dc9ef268cb0f406f8d9f1df37

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