Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e817b558aef96c…

MALICIOUS

PDF

75.9 KB Created: 2021-03-28 14:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ca5e8887f82c561b23f16d059b39240 SHA-1: 5abd0f23e32d4e2117f67ac3a00e789c935491a9 SHA-256: 40e817b558aef96ca1349f38a409da8474669f8bc5305c04fd3fded44eb1ccf7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, appears to be related to a product advertisement, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=craftsman+scroll+saw+16+inch
    • http://jasazotinalol.mygamesonline.org/vafuluxopufuririkape.pdf
    • http://pujugekan.iblogger.org/bootstrap_theme_free.pdf
    • https://cdn-cms.f-static.net/uploads/4416512/normal_605321af3e796.pdf
    • http://xujadawowupu.scienceontheweb.net/lokmat_newspaper_aurangabad_download.pdf
    • https://static.s123-cdn-static.com/uploads/4493545/normal_6000a4535e6a7.pdf
    • http://presalon.xyz/177337195266onyq.pdf
    • https://cdn-cms.f-static.net/uploads/4403429/normal_5fdb02d7a7096.pdf
    • http://vazitafolozif.22web.org/38785988233.pdf
    • http://pedron.fun/how_to_do_bullet_time_bounce_botwzxwjl.pdf
    • http://zabemaladameg.medianewsonline.com/ralosakilikagitukaveta.pdf
    • http://nezowigivomi.scienceontheweb.net/85581841457.pdf
    • https://static.s123-cdn-static.com/uploads/4477658/normal_5fcd0f54727fa.pdf
    • http://tadolonelo.sportsontheweb.net/bse_odisha_english_grammar_book.pdf
    • http://lnstagramservicecopyrights.com/thermador_oven_error_code_f11rdo1p.pdf
    • http://itactical.xyz/nubazesafegivofasekari867u2.pdf
    • http://towufugejudet.iblogger.org/greater_trochanteric_bursitis_stretches.pdf
    • http://piredvizhnik.com/jirubuseduwt9usl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ee451e90-0f82-419e-9d0b-b7ad3485c2db/12950429373.pdf
    • https://uploads.strikinglycdn.com/files/20441a90-4d02-46b5-96f1-e85d185e6dcf/12085878486.pdf
    • http://teropisarazo.myartsonline.com/dictionary_of_abbreviations.pdf
    • https://uploads.strikinglycdn.com/files/b7cf6b31-159c-4e83-9988-ed0ca7e3213f/comentario_biblico_matthew_henry_gratis.pdf
    • http://vuzuwukef.atwebpages.com/selegupowivawogi.pdf
    • http://tobikinos.onlinewebshop.net/deductive_bible_study_method.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_off0000e728.bin
d5770660de96f3bd5106c04a259f217c4dd44a67008e052eb2432ce9cc730afc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE728 5324 bytes
font_01_sfnt_off0000f92e.bin
b77584ed3d018163cf9a681bf1685b19dbf31f3175351621cdc1e19b2028a5fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF92E 12172 bytes

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