Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2a481c3c84cb26…

MALICIOUS

PDF

74.6 KB Created: 2020-12-17 19:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0968ae614937e1a91a7a50870a96a44a SHA-1: 5932d8fe7fbb2550dc05693d70824b3dd310a01e SHA-256: 6b2a481c3c84cb261d41346e6486fc7b528949f60138dc261fd5dd828d6f0e09
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to 'https://trafficel.ru/aws?utm_term=android+ios+emulator+vscode', which is likely a phishing or malware distribution link. No scripts were extracted, but the PDF structure and embedded URI suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?utm_term=android+ios+emulator+vscode PDF link annotation
    • https://reropazorulofo.weebly.com/uploads/1/3/4/4/134437501/fdb0c7b.pdfIn PDF document text
    • https://mogugadikawes.weebly.com/uploads/1/3/4/0/134096191/16c29f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454988/normal_5fc4285911945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_5fd61e46cf149.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd28d02c57a03dcb375a0d/1606232274396/gigogoxakodezu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc136563398ff7515300e75/t/5fc31d21fa04221c71866e75/1606622497759/dc_mongul_feats.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/pafagug.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/simple_electronics_projects_for_high_school_students.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c07f92c50b1a1e98aee2/t/5fcf81b376f3eb1a46e6457a/1607434675997/werewolf_wallpaper_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e2e8b71-48a8-47cd-821a-29aee89380cb/10899609861.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/ba_pass_full_movie_hd_300mb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB00 2960 bytes
SHA-256: ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b
font_01_sfnt_off0000e583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 5136 bytes
SHA-256: 1064d5ab6ebf21133f16090c400328e91989245716782532042782cf2884b630
font_02_sfnt_off0000f6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 11400 bytes
SHA-256: 75c416d6288bc0900f985f0d0c621de76d9f03abe90aab3aa9fa4a2475426c86

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