Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55c9d84050570ff…

MALICIOUS

PDF

81.2 KB Created: 2021-03-01 22:16:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f51c319410cd07bb09d1299033e816c SHA-1: bf41bf09a19749854b95944dd04d73c17d0c185a SHA-256: d55c9d84050570ff198dba68f5fbb2d724eb99831f7062e6262a82823cf55a5b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with multiple embedded URLs pointing to external resources. The PDF_URI heuristic specifically identified a URL that appears to be a lure, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of external links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=el+camino+college+spring+2020+class+schedule
    • http://wopivobozas.66ghz.com/2205674661.pdf
    • http://lerawutevokaj.iblogger.org/classical_conversations_memory_master_review_schedule.pdf
    • https://cdn-cms.f-static.net/uploads/4480142/normal_5fd94ade52676.pdf
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5fd8f562c1d66.pdf
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5ffbf2ef3b38f.pdf
    • https://cdn-cms.f-static.net/uploads/4424935/normal_5fd127fba153b.pdf
    • https://static.s123-cdn-static.com/uploads/4456687/normal_5ffbf0e990b55.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rozofamano.epizy.com/rogoxotosudimurixedatev.pdf
    • https://s3.amazonaws.com/vonusirukete/xerogujawejafumo.pdf
    • http://levasufut.rf.gd/19870525069.pdf
    • https://s3.amazonaws.com/ligole/hamilton_beach_40_cup_coffee_maker_manual.pdf
    • http://wiwesokowam.epizy.com/panidemosabetoxepoledok.pdf
    • https://s3.amazonaws.com/dofufiri/31691142496.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_off0000f465.bin
2cac72157e6dd2c30d2816c00d16cba8a7a9fb305c0909971387131ca8603c4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF465 5520 bytes
font_01_sfnt_off000106ef.bin
ad01463ad1cf7b38b6e174d918168538837dd64fb4cedd7bc50e6d39271b7923		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106EF 10072 bytes
font_02_sfnt_off00012968.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12968 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.