Malicious PDF — malware analysis report

Static analysis result for SHA-256 952a9f45c0a8ac6d…

MALICIOUS

PDF

74.2 KB Created: 2021-03-09 23:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e9e847d5957024f423c6787c720da03 SHA-1: 2059605db898b8cebf7d368609f21f8d07f3d023 SHA-256: 952a9f45c0a8ac6dab8088b2892df4600bcffe7c710a2a9b7357cc44f9c8fe1c
136 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of a password-protected archive lure suggests an attempt to bypass gateway security by encrypting the payload. The embedded URL points to a suspicious domain, likely serving as a download source for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://leonvi.ru/award?keyword=breviario+di+estetica+croce+pdf
    • http://siteznakomstv69.space/toforidizut5qc3v.pdf
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fd263bbdf7a1.pdf
    • https://static.s123-cdn-static.com/uploads/4470962/normal_5fcff348e04f7.pdf
    • http://top-shop-store.website/76572199440vhwp7.pdf
    • https://cdn.sqhk.co/foroboreb/eiPhatL/12684242652.pdf
    • http://premial.su/holt_handbook_fifth_course_answer_key_onlineudph6.pdf
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/govewu.pdf
    • https://befutoxe.weebly.com/uploads/1/3/4/4/134443098/wapivoguxalufos.pdf
    • https://cdn.sqhk.co/disumuneriva/h37Ojde/36389527699.pdf
    • https://cdn.sqhk.co/xipepovivik/jcT4gRU/tokaido_tsunami_gi_review.pdf
    • https://cdn-cms.f-static.net/uploads/4486374/normal_600d5ebe2e975.pdf
    • https://cdn.sqhk.co/zibepidok/JnJib7y/71899262873.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d339563c-d9f3-49d3-96fb-784790d95161/how_to_clean_speed_queen_filter.pdf
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_0f10b34d0fe149739f318296bf4c681b.pdf?index=true
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_0b1eed2c34dd41b09a0d8742e5f86566.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5073d88a-c3fe-4ec3-9050-9b4cfe61cf0c/software_innova_3160_bluetooth.pdf
    • https://uploads.strikinglycdn.com/files/95e196f7-ec3b-4f5c-9c34-22a38b3f880d/whats_the_best_knot_for_braided_fishing_line.pdf
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_ff7065ad5a2a4154b369a974c1dc66ba.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fb42e237-32f6-426b-aa65-5d6d7b23b73e/zutesigamizazewaturad.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e293.bin
9ef7cf04907dc68846265be3043aeeaa1d3e8723996adacaefa4429d60bb38bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE293 5228 bytes
font_01_sfnt_off0000f478.bin
c142ee60d1a0146168dfc9a02fd272840ece40f30028d95a2d51ddade3224ab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF478 11476 bytes

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