Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0706c5e4ca16eb…

MALICIOUS

PDF

77.2 KB Created: 2021-03-15 22:22:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1807330530d21071f139aa839a76dcc0 SHA-1: 238dfcd8f0545f2368a816c479e0ccecd692b6fd SHA-256: 9b0706c5e4ca16eba1957365aea347c88aa0f62366444aea944220461eddcf1a
104 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, indicating a high likelihood of malicious intent. The presence of external URIs, specifically the one related to 'word up magazine posters', suggests a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to deliver malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 https://jumiwimov.ru/wix?keyword=word+up+magazine+posters
    • http://befotuke.mywebcommunity.org/bixerirebeziwiraki.pdf
    • http://legegapepapo.medianewsonline.com/how_do_i_reset_my_iphone_8_to_factory_settings_without_the_passcode_or_computer.pdf
    • http://winoxolupuvil.getenjoyment.net/differential_equations_and_linear_algebra_2nd_edition_slader.pdf
    • http://jovasetiveduza.scienceontheweb.net/altendorf_wa80.pdf
    • https://cdn-cms.f-static.net/uploads/4452599/normal_603d449796c8f.pdf
    • https://fopabitibomasad.weebly.com/uploads/1/3/1/8/131857723/2680e6.pdf
    • http://likedizar.medianewsonline.com/lunebux.pdf
    • http://nizavevorupuj.mywebcommunity.org/nemawumitenavubuk.pdf
    • http://sokegex.mywebcommunity.org/how_did_gigi_from_jerseylicious_lose_weight.pdf
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/502cb6b6015d.pdf
    • http://rexevivejegox.scienceontheweb.net/b._pharm_colleges_in_tamilnadu_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4366676/normal_600c6f8f6aaff.pdf
    • https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/darogelemaxuvemim.pdf
    • https://mebavowu.weebly.com/uploads/1/3/4/3/134353315/3271716.pdf
    • http://rezexepenoma.scienceontheweb.net/as_1200.pdf
    • https://static.s123-cdn-static.com/uploads/4420761/normal_5fee69da53d50.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cbced0a2-8889-4172-a3c7-f9e6fc1fbf5c/how_to_screw_2_planks_of_wood_together.pdf
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_2c7ec838592841e488d05d5ae28f0f89.pdf?index=true
    • https://uploads.strikinglycdn.com/files/465788a3-4c0f-4dcb-8ec3-5c8b8e2772fd/3872602338.pdf
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_b44cee8aac3a4a1faddea8e67638f951.pdf?index=true
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_538e218476264dfe8fc721d6e715a3c3.pdf?index=true
    • http://tikeresepujel.onlinewebshop.net/sepidisaraz.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9f1.bin
d4fef06219dfe042b899c648e603b456c9c362a864d3d23ca2d397b888284d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F1 5312 bytes
font_01_sfnt_off0000ec00.bin
f0ed11d3909a2873f4ce7d360b18fcb3e68efd1b7575b623d62fb3e8430ee158		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC00 11060 bytes
font_02_sfnt_off0001123a.bin
19c679c9384a3dcb98488421bdb83120c0e69c2cd6eb15df1d8a80eb28195106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1123A 16164 bytes

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