Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed5028ea06d8ddc…

MALICIOUS

PDF

109.2 KB Created: 2021-04-24 00:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb5a8cb267109908196473bff32739b0 SHA-1: 71879ada7c9323a553ea75fdfacf9f98ef393223 SHA-256: 3ed5028ea06d8ddc119e5fd9608304c1b49857dffabce975d793c6b58c5e5084
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to 'El Pollo Loco salad dressing', likely a pretext to drive users to the malicious URL. No scripts were extracted, but the presence of an external URI and the high confidence detection scores indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://pelibifir.ru/strik?utm_term=el+pollo+loco+salad+dressing
    • https://static.s123-cdn-static.com/uploads/4425514/normal_5fefa7283185c.pdf
    • https://cdn-cms.f-static.net/uploads/4408601/normal_600fcc3f0ad79.pdf
    • https://cdn-cms.f-static.net/uploads/4383687/normal_6040d4df39b5e.pdf
    • http://lnstagramverifiedsbadgeforms.com/7979383058312gn7.pdf
    • https://cdn-cms.f-static.net/uploads/4469836/normal_5fdc74ce4d581.pdf
    • https://cdn-cms.f-static.net/uploads/4459916/normal_602a0ab7a7250.pdf
    • https://static.s123-cdn-static.com/uploads/4459175/normal_5fe5e612337ac.pdf
    • https://cdn-cms.f-static.net/uploads/4469351/normal_605a69afb6a93.pdf
    • https://cdn-cms.f-static.net/uploads/4451757/normal_603e5595d52da.pdf
    • https://cdn-cms.f-static.net/uploads/4458145/normal_60245b458ed58.pdf
    • https://cdn-cms.f-static.net/uploads/4465255/normal_5fd70a115edf6.pdf
    • http://sy0n.icu/fusekewenifalagodedd67kd.pdf
    • http://kinokaiff.space/84935072856ek3q3.pdf
    • http://yognat.space/3550486624946kli.pdf
    • https://static.s123-cdn-static.com/uploads/4471082/normal_600047c761635.pdf
    • https://cdn-cms.f-static.net/uploads/4451760/normal_604a93f371110.pdf
    • https://static.s123-cdn-static.com/uploads/4487903/normal_5fde67544cd90.pdf
    • https://cdn-cms.f-static.net/uploads/4446931/normal_6030017eaf297.pdf
    • http://help-lnstagram-verifycopyrgiht.com/what_to_pray_for_when_someone_passes_away1y9se.pdf
    • https://static.s123-cdn-static.com/uploads/4470408/normal_5fef6a6f2298a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.orgThis
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/sazixipame/22877423645.pdf
    • https://s3.amazonaws.com/bufipevuril/71494524843.pdf
    • https://s3.amazonaws.com/dofufiri/puvoxemaga.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
    • http://scripts.sil.org/
    • http://scripts.sil.org/OFLAbyssinica
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115de.bin
fc33e3d8d26c500a0880b5a6f87c107cfefed86c95077472a724abe4ba621ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115DE 5200 bytes
font_01_sfnt_off0001279c.bin
d2eb92ab0451864e7321c4d80d24301def83ed22a41b0af93afbdfec148fa6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1279C 20896 bytes
font_02_sfnt_off00014795.bin
9a93d770c5777d944974a408806f76df43c923a0ef3df39c56d9f8232b37c966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14795 1484 bytes
font_03_sfnt_off00014fcb.bin
4c80f5f0f7ee39b5dd30dede496ba360a8214fe098fafd80e179774c1a19cddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FCB 14284 bytes
font_04_sfnt_off00017f40.bin
e4ec0357024d00ea727a759d3e65c476a67b8aa967e699b5a8487786eaabf0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17F40 16824 bytes
font_05_sfnt_off00019648.bin
1834dba23930dd2cd241a7461dbac5e252fcdaa478bc59d740ccfd1cc7ce930f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19648 6172 bytes

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