Malicious PDF — malware analysis report

Static analysis result for SHA-256 0497e30acd3aa21e…

MALICIOUS

PDF

444.0 KB Created: 2021-05-11 09:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc1a8ba433722419fda51203178a83db SHA-1: c08d5a0f6c2836ba113126136a651e69013420f7 SHA-256: 0497e30acd3aa21e1951550cd443e15b1485df73e03fefe0526a87d4c01adbe1
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs, some with unknown reputation, suggests the document is designed to redirect users to malicious sites. The heuristic 'SE_URGENCY_LURE' indicates the document likely uses deceptive language to prompt user interaction, a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://3bki.ru/8289247392925bnr.pdf
    • http://tublitalia.space/charcoal_chicken_nutritional_informationiakvv.pdf
    • http://natur-green.fun/ibn_sina_pharmaceutical_annual_report_2016xvfh1.pdf
    • http://theharaka.online/sorizaa3qb4.pdf
    • http://uscarins.info/oops_concepts_in_java_with_simple_example_programs27wcn.pdf
    • https://cdn-cms.f-static.net/uploads/4369302/normal_6041689ad9dad.pdf
    • https://fadurobudafeme.weebly.com/uploads/1/3/5/9/135959894/2295975.pdf
    • https://filavemegu.weebly.com/uploads/1/3/4/8/134883773/2313111.pdf
    • http://graatorama.fun/dowavamarixomt3jux.pdf
    • https://cdn-cms.f-static.net/uploads/4380090/normal_6019190e08a99.pdf
    • https://cdn-cms.f-static.net/uploads/4505837/normal_602ca2187d5c4.pdf
    • http://knitfqph.site/891488880565caps.pdf
    • https://cdn-cms.f-static.net/uploads/4495974/normal_60328abad56eb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dRGGkpkNhSI/wb?keyword=how%20to%20find%20the%20area%20of%20a%203%20dimensional%20shape
    • https://s3.amazonaws.com/fifuto/dragon_nest_mobile_guide_leveling.pdf
    • https://s3.amazonaws.com/fifuto/12465643853.pdf
    • http://menikax.epizy.com/line_6_spider_jam_service_manual.pdf
    • http://murunujerumax.rf.gd/english_speaking_course_book_in_punjabi.pdf
    • http://jipobemimojogot.rf.gd/sunerolabudowobejebasu.pdf
    • https://s3.amazonaws.com/midaguvimabof/material_science_graduate_programs.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069814.bin
b8cc2530dadc5b6fc5b6d32475e6a4055d2ead4108801a4f2704f0dfb72fd25d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69814 5284 bytes
font_01_sfnt_off0006a9e7.bin
9d7faf0b2dc7514d80de490b57a9fff52bf337928e19e161d1cecf392f43c408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9E7 11656 bytes
font_02_sfnt_off0006d183.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D183 4324 bytes

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