Malicious PDF — malware analysis report

Static analysis result for SHA-256 2052b7a531cf44fa…

MALICIOUS

PDF

78.2 KB Created: 2021-03-17 01:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49abf88f6b168dc2686cc54658a96286 SHA-1: 2169a546c91510f7f29c28a90672866223063f11 SHA-256: 2052b7a531cf44fa9870e9c91e96f4c888ce4fd56072a8e2caa80b843e7ab41c
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to exercise equipment, suggesting a phishing attempt to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=gold%2527s+gym+exercise+bike+parts
    • https://cdn-cms.f-static.net/uploads/4496193/normal_602da5892d16b.pdf
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5fcb634b4f41d.pdf
    • http://koprovk.xyz/nothing_but_the_blood_of_jesus_casting_crowns_chordsa78il.pdf
    • https://cdn.sqhk.co/xalibolopov/ghhgigc/36958858023.pdf
    • https://cdn-cms.f-static.net/uploads/4529780/normal_5fe6144c60060.pdf
    • https://cdn-cms.f-static.net/uploads/4417523/normal_604a1a6b1f6a9.pdf
    • https://cdn.sqhk.co/zamupefa/jgcgeHd/risultati_serie_a_2017_18.pdf
    • http://wownatural.fun/altiverb_7_xl_manualeukqg.pdf
    • https://cdn-cms.f-static.net/uploads/4475847/normal_60354c4a431d3.pdf
    • https://cdn.sqhk.co/jitolado/jzgchco/rojixemekep.pdf
    • https://cdn-cms.f-static.net/uploads/4403283/normal_603c46993dfaa.pdf
    • https://static.s123-cdn-static.com/uploads/4449399/normal_5fcf05b441201.pdf
    • https://cdn-cms.f-static.net/uploads/4459058/normal_60317d7dd45cb.pdf
    • https://static.s123-cdn-static.com/uploads/4460447/normal_600456e5c51fa.pdf
    • https://cdn.sqhk.co/xafiguzi/giIjaOT/transfer_paper_michaels_canada.pdf
    • https://cdn.sqhk.co/bavomizobe/hfgjRQm/linear_function_domain_and_range_interval_notation.pdf
    • http://vzruvayarttraff.xyz/how_many_chapters_in_the_little_princeg1oh4.pdf
    • https://static.s123-cdn-static.com/uploads/4387430/normal_5fdccda94ff0a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xirixedojaziw.epizy.com/4085454512.pdf
    • http://rewomokokudukoz.rf.gd/poreluri.pdf
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_5b96ca0974594e778e7a9937717e9eb5.pdf?index=true
    • https://9f9bd9fa-00fe-4673-b34e-9a629881f524.filesusr.com/ugd/09273f_c4079c4b4bb24e868662c7069ff8ae2a.pdf?index=true
    • http://dujizadixupodur.epizy.com/21453161083.pdf
    • http://bibosisiv.epizy.com/49169802063.pdf
    • http://pimorem.epizy.com/79828471007.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_off0000f3ad.bin
ef1836ccc489c1876272b3901db221f41e66f7ccfd3e703b527f5e734d4e1740		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AD 5832 bytes
font_01_sfnt_off00010781.bin
4e93e94bbe1f2b793507e5c26530482345ed2485e8b16c133858310f12b5cbc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10781 10488 bytes

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