Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b222979d3bba5e…

MALICIOUS

PDF

74.4 KB Created: 2021-01-06 13:44:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cb84fd36afaf49bff786236ef6446553 SHA-1: 3d6e170134015e7cefb469456cfff18f608060ec SHA-256: 21b222979d3bba5e7d1b4fddc16a1383589f726b7e60b241bd2f56845ceb1629
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffe.ru/aws?utm_term=globo+reporter+noruega+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409610/normal_5fd2dd415aab3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5fa1e1e93d32b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5fc25c6d97ace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450044/normal_5fe9f746075c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fc666d2a3b33.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/zuwosil/wilderness_state_park_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/fenizapunezeviganimosen.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/36398647151.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/sovazaliguleji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/464e2dd3-83e2-405f-842a-5cf22bdac080/nouns_that_start_with_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9891258-7194-4bd8-ae9b-d9ba8e638979/kexigivulateforebuworijo.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/delhi_university_anti_ragging_affidavit_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce758a9-c1a0-47a4-afd8-b0d910f36581/happy_glass_game_free.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_off0000e54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54F 5388 bytes
SHA-256: e7bfae551cc0929a961752c4ca2840eac5c83f82cf06aa9a928d5b2406787888
font_01_sfnt_off0000f7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BC 11032 bytes
SHA-256: 7c32f720648c9b76665cb50e1c5190d3338ada0ef6a966958edc4e1fc4dddf8d