Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e1cc56b05e6512…

MALICIOUS

PDF

76.8 KB Created: 2021-02-22 14:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 63cacc01466cf04cf0143578d7b6cb10 SHA-1: d297db02aba7ca2321c36b0887611ad8e2b53252 SHA-256: 17e1cc56b05e651270642f4b8da9255ea6b580895cd0a6d35df33c426a5a1639
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://leonvi.ru/aws?utm_term=how+can+i+do+a+giveaway+on+instagram', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to Instagram giveaways, aligning with common phishing tactics.

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://leonvi.ru/aws?utm_term=how+can+i+do+a+giveaway+on+instagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383801/normal_601a120bc8e55.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/zY8hggh/79490182509.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391636/normal_5ffd10ac528f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451945/normal_5fd6476d3edda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fe05c72ee9c6.pdfIn PDF document text
    • https://goxagakile.weebly.com/uploads/1/3/4/3/134316835/piluvo_tovatakotomased.pdfIn PDF document text
    • http://zebizekesodu.iblogger.org/cisco_troubleshooting_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/lilajibusizu/ifheFHo/bizuvudegejoroji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447280/normal_5ff3e635b0a2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426832/normal_5fc9190b6ef8a.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/gfiahhz/business_strategy_examples_youtube.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/fagafujarigulimewozo.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/belapawerezuju/free_minecraft_games_to_play_no.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/71701609188.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/3879221795.pdfIn PDF document text
    • http://rojapaj.epizy.com/meloreneretanisozulidin.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/childrens_world_map_printable_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE458 5444 bytes
SHA-256: c0894274c5402d619ee750f0d3541ac182696235eabc74f5fb97c61f9f2223b7
font_01_sfnt_off0000f6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D9 2132 bytes
SHA-256: 0d49467104a5614a46687c492dfad68777b92eea3cb015cc4b81f943367cbe5e
font_02_sfnt_off0001003c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003C 10940 bytes
SHA-256: 384c6f6761cd37a12ded5639266ee8600d9ebbead822252f2d6735270c5e09d4

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