Malicious PDF — malware analysis report

Static analysis result for SHA-256 958faa858a672102…

MALICIOUS

PDF

76.8 KB Created: 2021-03-10 14:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72fe54985d7c444ee013ba391225ffab SHA-1: e326224c9dcf8222f911065f754c70767d7c8cbd SHA-256: 958faa858a67210220715dafc7e7b4e1670e3e465f795c73a6d775a3f8e6412e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm or SEO scam. It contains numerous external links, including a primary link to 'https://soxebez.ru/award?keyword=color+atlas+forensic+pathology+pdf', designed to direct users to potentially harmful websites. The document body appears to be corrupted or heavily obfuscated, preventing a clear understanding of its intended content beyond the presence of URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://soxebez.ru/award?keyword=color+atlas+forensic+pathology+pdf
    • https://moxigowa.weebly.com/uploads/1/3/0/8/130814106/nunebopabon-lasebokijumu.pdf
    • http://podonebatimekel.22web.org/lapodelanufetoxenobef.pdf
    • https://varovugunigode.weebly.com/uploads/1/3/4/4/134480676/zepufizoniladi.pdf
    • https://cdn.sqhk.co/baresupujar/iXvrhdv/20316917842.pdf
    • https://cdn.sqhk.co/jebavimot/JibIF0s/falarazunobek.pdf
    • https://disesusobabetom.weebly.com/uploads/1/3/0/8/130814900/3118464.pdf
    • https://cdn.sqhk.co/xupodafib/j2zbLjj/clouds_lyrics_joni_mitchell.pdf
    • https://vebodejivab.weebly.com/uploads/1/3/2/3/132302978/e2f49a1fc27.pdf
    • https://cdn.sqhk.co/xogeloke/Ejdhcha/dr_mario_world_virus_event.pdf
    • https://cdn.sqhk.co/kigimole/ogigjhb/iphone_12_120hz_display.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://silegig.epizy.com/how_to_workout_at_home_equipment.pdf
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_be02aee3bef246d1955bcabd5dd4a383.pdf?index=true
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_57279cc3bc254e71bde41479ae4d08c7.pdf?index=true
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_b6c2294b41c643a08930be7fe90bb775.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b7dc5b25-c4e2-49be-8814-1f320b297e18/canon_mg6320_b200_error.pdf
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_576fd23d01764429a5b6ef1bff857ff5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/96a6e96d-b5f5-4616-9717-8dc65b230f11/junovedifivek.pdf
    • https://uploads.strikinglycdn.com/files/999f674b-77fc-429d-ae09-43a17c4682aa/43648591660.pdf
    • https://uploads.strikinglycdn.com/files/18de9484-a341-4c81-86e3-2ff5f6eccf63/tipos_de_organizadores_graficos_y_esquemas.pdf
    • http://woxebolinos.rf.gd/pyrolysis_of_biomass.pdf
    • https://uploads.strikinglycdn.com/files/9ce0f007-55fb-486c-88e6-4047b4812caa/hillsborough_county_schools_student_calendar_2020.pdf
    • https://uploads.strikinglycdn.com/files/674db954-2678-4309-a241-fb8e045a94a4/97436317116.pdf
    • https://uploads.strikinglycdn.com/files/fc3ab134-d512-49d9-9126-a2aacbe296fe/cricket_tournament_application_form_sample.pdf
    • https://uploads.strikinglycdn.com/files/feea8cf7-6d2d-465b-a63c-68247e0254fe/what_causes_water_blisters_inside_your_mouth.pdf
    • http://wapukum.epizy.com/2250940364.pdf
    • https://uploads.strikinglycdn.com/files/352695eb-4beb-417d-8c12-c4ff8bf9fe67/63800658961.pdf
    • https://f38be386-5799-403b-9303-fb121113655a.filesusr.com/ugd/6f1aa7_ff195148cba64abf91cbdf794b16eb2d.pdf?index=true
    • http://zobovobewuw.epizy.com/dj_bravo_dj_bravo_song.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a3.bin
aff627af47a648d003f73d2f4729f884cd7c2b82ea89b1ad827a1a8fd3de7e40
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A3 5328 bytes
font_01_sfnt_off0000f2bb.bin
ac2e5e34ec7c18273ed76bdb3744e88544f7ca4e53063931217241c1c5ab7b19
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BB 10696 bytes
font_02_sfnt_off0001171d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1171D 4324 bytes