Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a269b02a34ae045…

MALICIOUS

PDF

79.3 KB Created: 2021-03-30 19:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c016fa0e47503325cd2fe76216a32afc SHA-1: 6869873fb462e083d399c40d56664da4f71485f7 SHA-256: 0a269b02a34ae045b00ebecfdc42abe95dfcd21afcf0ac60e500422db575f791
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection further confirms its malicious nature. The embedded URLs suggest an attempt to redirect users to phishing or malware-hosting sites, likely as part of a broader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/strik?utm_term=how+to+replace+apc+xs+1500+battery
    • http://megatorg.ru/265981751815m332.pdf
    • http://tuvoreda.scienceontheweb.net/mofojeguvamotiwufol.pdf
    • http://xivazokib.medianewsonline.com/jofuzepoxeg.pdf
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/mosisaze.pdf
    • https://tawigijonepoter.weebly.com/uploads/1/3/4/0/134012415/jejujiwivenepel.pdf
    • http://buybritishcat.com/blomberg_e01_error_codez0xay.pdf
    • http://vezerfa.xyz/78885157289zk8bp.pdf
    • https://tupeduwexawagov.weebly.com/uploads/1/3/1/6/131607208/makebume.pdf
    • http://dikagowoxi.sportsontheweb.net/rubber_calender_machine.pdf
    • https://tofikopu.weebly.com/uploads/1/3/1/3/131381225/tetibipis_zotodova_warizoxete_vipomode.pdf
    • https://peturenu.weebly.com/uploads/1/3/4/4/134401199/lofikitogozu_voxesuwekesuxup.pdf
    • https://doparobisupof.weebly.com/uploads/1/3/5/3/135329684/vijifatubuvisigi.pdf
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/joselobawoguradafixe.pdf
    • https://kesakoti.weebly.com/uploads/1/3/1/0/131070149/feresigiforuwumoroj.pdf
    • https://wamurereleveti.weebly.com/uploads/1/3/5/3/135392703/3649020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d33fc366-e048-45ac-963f-9943a2e203a0/78820468142.pdf
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_48e9e18926514547aecfe6f83d40742c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b95b834e-078c-4f20-acff-df92b2e72e94/how_to_find_initial_velocity_using_calculus.pdf
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_5edb5a4ac3664699b835c1aa5c685344.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fcf432e7-ec2d-4b04-9b9a-c55a075e7f18/zavugetejipiwapebipuwu.pdf
    • https://uploads.strikinglycdn.com/files/34a9f0c3-f0d4-4c19-ac6a-8ec8cd34ffa7/what_is_seven_devils_near.pdf
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_a2410a3718044d10bc8e26357d38105b.pdf?index=true
    • https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_3315ae3fb68c4edc96df57c77a5f8df6.pdf?index=true
    • 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_off0000f7b8.bin
ac2246b29b2b5de2c4f7a5ea18ad4cadfd1b1639dc273bf9c5e57ee77d025290		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B8 5608 bytes
font_01_sfnt_off00010af1.bin
0c9f696dc0b8afddc8bd8017b6e7ba111c267b57bc1a0bf02df2b337cf44111e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF1 10744 bytes

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