Malicious PDF — malware analysis report

Static analysis result for SHA-256 348862ca7c23b19d…

MALICIOUS

PDF

82.5 KB Created: 2021-03-27 11:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20f9602c60890da5d12a11928b7c7a16 SHA-1: 02a6650d6390232382b47e0dec70ca599d66efca SHA-256: 348862ca7c23b19de2885792caaa9a8a181a818f5135c3f7751b224ba7548990
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the ClamAV detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=karpman+drama+triangle+ted+talk
    • https://xipuzitob.weebly.com/uploads/1/3/4/5/134523495/kowimaxapetakipurazi.pdf
    • https://cdn.sqhk.co/befozaxulot/4kylq7o/used_asphalt_drag_box_for_sale.pdf
    • http://samettemiz.xyz/free_printable_gingerbread_man_story_characters_printable1smoq.pdf
    • https://pofemazavuson.weebly.com/uploads/1/3/2/3/132303373/vesunuf.pdf
    • https://cdn-cms.f-static.net/uploads/4449599/normal_600ed49221e9d.pdf
    • http://tehnotop.space/join_files_side_by_sideb9syb.pdf
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5fefd7af4d242.pdf
    • https://cdn.sqhk.co/xurajalijok/heJgjgc/difference_between_npr_one_and_npr_news.pdf
    • http://fredo.bike/nanosofebq5rzn.pdf
    • http://vknacruckalaikov123.xyz/biblical_theology_of_leadershipsn20r.pdf
    • http://get3creditscores.info/singer_stylist_7258_bobbin_sizev0sfb.pdf
    • https://damasidegiked.weebly.com/uploads/1/3/1/4/131411688/lixagodatag-bowafuwuv-xavozigodu-zujupexu.pdf
    • https://wogifirum.weebly.com/uploads/1/3/1/0/131070377/dedefbff.pdf
    • http://shmelev.pro/40810323640bf62a.pdf
    • https://cdn.sqhk.co/lilovenodi/qvX12jb/tewugirigimusipa.pdf
    • https://dopozigixojak.weebly.com/uploads/1/3/4/5/134509916/namitavagotuvinonuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nufidibodudulad/49422957619.pdf
    • https://s3.amazonaws.com/xukirizugukugi/duluvajetepoloxomaluza.pdf
    • https://s3.amazonaws.com/pisedij/xitafode.pdf
    • https://s3.amazonaws.com/sowirutelevolur/fiwikejavimudar.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_off00010587.bin
ec4c6b8677ad9456e93c559c398f5778a7443c7cbd10ecb1ed0043f5b0f3be55
pdf-font-stream PDF embedded font (sfnt) at offset 0x10587 5136 bytes
font_01_sfnt_off000116e9.bin
796be60bb1fc210374cea3b1f38d1e2875737484c342c90acc999e3a70959aa6
pdf-font-stream PDF embedded font (sfnt) at offset 0x116E9 11160 bytes