Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e3cc8ff5ce073c…

MALICIOUS

PDF

66.6 KB Created: 2021-02-08 18:10:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: df1af91bf5e26254ca847e1b1b5106c7 SHA-1: 28031eb333ccc6fc2c8224815440eef3a0ec9063 SHA-256: 87e3cc8ff5ce073cc6c3a23ce84faf3175719f049ef9bda71f9a2ca2b6befb37
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to technical information, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8523

Heuristics 3

  • 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
  • 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://baarspo.ru/aws?utm_term=complexity+of+algorithm+cheat+sheet PDF link annotation
    • https://cdn.sqhk.co/momajuxu/bjgjcV0/48484604144.pdfIn PDF document text
    • https://cdn.sqhk.co/wimakebibane/8hhwl7E/kupoxigizobipesot.pdfIn PDF document text
    • http://gachihyper.xyz/trw_stone_wizard_free_download42b89.pdfIn PDF document text
    • http://cosmicgig.com/carlow_county_council_housing_application_formrolhz.pdfIn PDF document text
    • http://legrand-spb.ru/calderas_peisa_duo_manualylsz2.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/gfEiieX/jiseruzusubineguwiju.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/dFcheih/costume_store_midtown_atlanta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376878/normal_5fe5c6ac6e76c.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofoziga/4Zj99Cz/rasafumexumikujipu.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/aIrcje8/octopus_plural_possessive_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386335/normal_5fddd5a57905e.pdfIn PDF document text
    • https://cdn.sqhk.co/vapatibu/BCqcijv/offline_language_translator_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/DjjTjeQ/zokesajurudasukoran.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/ijuySgc/italian_love_songs_cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/wallpaper_god_krishna.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/blackmail_odia_all_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/zevubolekokaxakagu.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/29586916296.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEB 5504 bytes
SHA-256: eefac9ba1293a52387054eefe9a8b011281e8243ca58a83906f3b0ca9f28c254

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