Malicious PDF — malware analysis report

Static analysis result for SHA-256 387593cfe518dc63…

MALICIOUS

PDF

76.5 KB Created: 2021-03-23 13:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fee7e82def9aaa3b3278b0d5e0d64438 SHA-1: b801335ef8d8a20bf3a1787a2d379301e2e3ff66 SHA-256: 387593cfe518dc636e347f5ad78aa00b739822abf18bb30d1ed63822aff7ac24
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to search results, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=how+to+do+google+image+search+picture
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5ff2bb742ffbc.pdf
    • https://cdn-cms.f-static.net/uploads/4472481/normal_600e47eab2390.pdf
    • http://sungo1.space/816788605326eqhy.pdf
    • https://cdn-cms.f-static.net/uploads/4475727/normal_6014963a93013.pdf
    • https://static.s123-cdn-static.com/uploads/4455196/normal_5fc9d81a10de8.pdf
    • http://pobesegu.scienceontheweb.net/spatial_awareness_test.pdf
    • https://cdn.sqhk.co/wejafivelij/n9hcQgf/46352660338.pdf
    • https://static.s123-cdn-static.com/uploads/4497688/normal_5fde21277765c.pdf
    • http://raguvigawak.mypressonline.com/tofanajazikidufunafum.pdf
    • http://birjand.design/audifonos_motorola_verve_buds_110_manual_espaol78eg6.pdf
    • http://epaytds.xyz/87975850468j4pro.pdf
    • http://crubr.space/4728903099400idn.pdf
    • https://cdn.sqhk.co/pibilebomek/gjaFhrV/run_trailer_2020_hbo.pdf
    • http://rabemedexisubis.mygamesonline.org/muscle_mass_workout.pdf
    • http://servicesforsupport.com/democracy_and_education_dewey9qhpe.pdf
    • http://form-lnstagramverifiedbadges.com/dyson_cinetic_big_ball_animal_2_partsme0a5.pdf
    • http://foyou.store/shiva_cartoon_tinyjuke_nety1aia.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mubefula/how_do_i_claim_my_cuisinart_warranty.pdf
    • https://s3.amazonaws.com/widuxade/76548242188.pdf
    • https://s3.amazonaws.com/jeponowon/ralebipadof.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_off0000ed12.bin
3cd45475946548e48fe60687ce729e51435ee31c4493173b434475f6a8342570
pdf-font-stream PDF embedded font (sfnt) at offset 0xED12 5540 bytes
font_01_sfnt_off0000ffcd.bin
bf912af09542c4351abc89b4e70a6d292dd79ac97978995657b9c62bdd5f7d49
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCD 10812 bytes