Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73c8ee6a3be825d…

MALICIOUS

PDF

69.7 KB Created: 2021-02-11 18:16:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12288f39f483814b83354e2248542c53 SHA-1: 25ed7814f3cb5c8d7aeb46b73a4465ec763d26cd SHA-256: b73c8ee6a3be825df152e69396a608d9267db2f1563388972205a94fe086f6e6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://bologen.ru/123?utm_term=yuuwaku+recipe+scan+vf', suggests the document is designed to redirect users to a potentially harmful site. Although no scripts were explicitly extracted, the PDF format and the nature of the heuristics suggest it may contain embedded JavaScript or exploit vulnerabilities to achieve its malicious goals.

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://bologen.ru/123?utm_term=yuuwaku+recipe+scan+vf PDF link annotation
    • http://blu-ital.space/ball_balance_game_app_iosmm1ip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416654/normal_6005c6eb77115.pdfIn PDF document text
    • https://cdn.sqhk.co/xotabuti/efdRUib/81199724967.pdfIn PDF document text
    • http://antileqphh.site/custodes_40k_army_listofrhg.pdfIn PDF document text
    • http://legko.travel/gavudokosevogezebidisv9t8m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_600f4883116d9.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/U8a9Bid/how_to_draw_cartoon_turtle_easy.pdfIn PDF document text
    • https://ragaxunuwad.weebly.com/uploads/1/3/1/4/131407405/rabejomanobika.pdfIn PDF document text
    • https://motovonesavot.weebly.com/uploads/1/3/4/6/134690882/nesetozuwewokonumili.pdfIn PDF document text
    • http://guitar.su/duwasuxenadejixe37qpj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490528/normal_5fdcd0caf0af6.pdfIn PDF document text
    • http://8gusevshop.website/203248304939n2uz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451044/normal_5ffed33120892.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/hdUhihi/46425681433.pdfIn PDF document text
    • http://aires.fun/bol4_red_planet_albumnbcub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5ff4b4287dac4.pdfIn PDF document text
    • https://kinuguno.weebly.com/uploads/1/3/1/4/131454024/xixakiberiwojozipaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A5 5152 bytes
SHA-256: dc610b5939f213a0ab017a63572c1fe139370e2304432a0eb8b061772b850bf6
font_01_sfnt_off0000e558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE558 11216 bytes
SHA-256: 567eae896493dff205755b8c73569bf6607f6eefc3527df4a1b09b4c764c9746

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