Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab89c517c52803d0…

MALICIOUS

PDF

83.2 KB Created: 2021-04-05 16:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ad66e55ac228f1e49381a2ca7503c16 SHA-1: d3d8ffafda3be1d32a6cdda9af86236fbc4b62f2 SHA-256: ab89c517c52803d01738ea51ab3bc550d69ed92eca264690ce5a2bfe3ed618d9
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO link farms and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=ap+spanish+lit+study+guide
    • http://tularobumof.66ghz.com/mexezodededixugewoji.pdf
    • https://cdn.sqhk.co/letarezetap/2fjdugc/candomble_religion.pdf
    • https://cdn.sqhk.co/duxadikoti/fDhhgja/nipat.pdf
    • https://cdn.sqhk.co/naziwixolagu/fYi6o9l/lost_sphear_gameplay_espanol.pdf
    • https://cdn.sqhk.co/gasidonoda/35hbgja/wipitodedetat.pdf
    • https://cdn-cms.f-static.net/uploads/4451374/normal_6037215d98e59.pdf
    • http://detobusukited.iblogger.org/85919202912.pdf
    • https://cdn.sqhk.co/sixitigoxeto/idggdic/us_wars_and_conflicts_timeline.pdf
    • https://cdn.sqhk.co/lopumilekana/gcRgdkQ/clash_royale_sparky_deck_arena_12.pdf
    • https://cdn.sqhk.co/saxezekobida/gef45hj/super_mario_land_music_sheet.pdf
    • https://cdn.sqhk.co/pasivuzuke/xjhjE4o/world_map_offline_exe.pdf
    • https://cdn-cms.f-static.net/uploads/4369493/normal_6069c47f78cab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c0a42e0f-4cce-4e1b-84a6-2a5440198d67.filesusr.com/ugd/440b6d_9447761d71c7421e8540bb3f43e58f29.pdf?index=true
    • https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_8ae73c5fffcc4ffeab95ac79ed4eefe4.pdf?index=true
    • http://kagapoxarizi.rf.gd/duzawot.pdf
    • https://0e818273-c791-4c7a-b20f-750474b78fe4.filesusr.com/ugd/362633_3cbb39fa45d4404c878188e355c1e0dd.pdf?index=true
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_5d4eb6fd782a4fd58d5ec71bdbe60340.pdf?index=true
    • http://nirirojigupe.epizy.com/72600442386.pdf
    • http://gimapetabotoza.rf.gd/sejeg.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_off00010631.bin
1ed61d66dceb0505b090236b5b82449c7939362d2d03dac74dafad7dce2b5634		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10631 5216 bytes
font_01_sfnt_off000117fc.bin
824c53c8e96a5cd39024774f0f1ba3c262e82046c5997a0101d254749f4315c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117FC 12104 bytes

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