Malicious PDF — malware analysis report

Static analysis result for SHA-256 933e00e00b118a79…

MALICIOUS

PDF

81.9 KB Created: 2021-04-04 00:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c367d488b1387063058454e172c04f4c SHA-1: d59cc3e3a152908a76ee3a1a627c0492240f7d6a SHA-256: 933e00e00b118a790a4d3c95ed39a21cdc6c8bef33103d3c1b9f7b879841811c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms it as a phishing trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to 'Adobe cloud login', reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=adobe+cloud+login
    • http://katipef.medianewsonline.com/33751426198.pdf
    • http://blancop.xyz/95753713666h8bb.pdf
    • http://detonic-official.website/84847524822mwka7.pdf
    • http://sutufobu.iblogger.org/58008600618.pdf
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdf
    • https://cdn.sqhk.co/piwizogir/ebifjcc/46669687001.pdf
    • https://cdn.sqhk.co/sileluzorupo/cUDjghg/fast_food_chef_cooking_and_serving.pdf
    • https://cdn.sqhk.co/xufatirumina/gVXhihb/96491784027.pdf
    • https://static.s123-cdn-static.com/uploads/4483361/normal_5fc5b61c91a39.pdf
    • https://static.s123-cdn-static.com/uploads/4450430/normal_6008ee8920fad.pdf
    • https://cdn.sqhk.co/kupulifip/dheZ2qX/cute_pixel_art_color_by_number_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4444113/normal_60030606750c7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nezebur.epizy.com/86571080370.pdf
    • http://rogofideb.onlinewebshop.net/30588764439.pdf
    • https://uploads.strikinglycdn.com/files/1db337cd-dbd7-4695-a5d4-4262e57ed0d4/what_is_a_smart_call.pdf
    • http://mimumugemefes.epizy.com/wutepajumukojagezilebuno.pdf
    • http://xafafogaditeki.rf.gd/zavevonixavovasukezusa.pdf
    • https://uploads.strikinglycdn.com/files/6413cb15-e0d2-4657-899c-d80f72f078e8/ill_be_gone_in_the_dark_hbo_season_2.pdf
    • http://bokapis.rf.gd/59766261582.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00011138.bin
9a8d282ac686e1baa94b80fab824261d27ff5836332df841d71d36ba09139602
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11138 23752 bytes
font_00_sfnt_off0000dc2d.bin
a702739659fc7bc1b7d2de39483e8d2295cf00cededa4f2767154cef2cf56257
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2D 4752 bytes
font_01_sfnt_off0000ec6e.bin
829022790a7dc5c74e7031c801dbe676815a08c6577f10dba8c3a8fa2e40cf6d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 10672 bytes