Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db047a49c364adf…

MALICIOUS

PDF

77.5 KB Created: 2021-03-14 01:10:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61aed14c120ceb42e2c68bf64d89dacd SHA-1: d0fefc8b63284ee8d9e83682b1045facae74627d SHA-256: 8db047a49c364adfa19822430dfab55aeafdcdf12a94baf0a4c76b925f6e2061
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to job applications or awards, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/award?keyword=it+project+manager+cover+letter+pdf
    • http://prosucre.pro/mbti_personality_database_quizhde0q.pdf
    • https://cdn-cms.f-static.net/uploads/4470402/normal_6036bf2aee619.pdf
    • https://cdn-cms.f-static.net/uploads/4470545/normal_602b80845fa66.pdf
    • https://static.s123-cdn-static.com/uploads/4448548/normal_5ffc859b38a3c.pdf
    • https://cdn.sqhk.co/dasekizob/gghewid/96522654888.pdf
    • http://nazhivy.net/hp_deskjet_6540_error_lightsvpqv9.pdf
    • https://cdn-cms.f-static.net/uploads/4393514/normal_5fd37a1c93edb.pdf
    • https://cdn-cms.f-static.net/uploads/4410020/normal_601c730031225.pdf
    • http://senteber.site/revikagilewazus7ry.pdf
    • https://static.s123-cdn-static.com/uploads/4408174/normal_5fc84d727b12f.pdf
    • https://cdn.sqhk.co/sirijunubi/thbFVhj/mopukag.pdf
    • http://wirajamosilun.22web.org/almagesto_tolomeo_italiano.pdf
    • https://cdn.sqhk.co/goxufime/geYm1Qf/nogazepulepisixog.pdf
    • http://hangookoil.ru/bahaddur_kannada_full_film_freemky2p.pdf
    • http://world-wild-shop.com/how_to_use_plantronics_headset_c054oo33k.pdf
    • https://cdn-cms.f-static.net/uploads/4466135/normal_600f62715186e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dozonexupiwef.epizy.com/nenawudedigaresuwod.pdf
    • http://vamivesuger.epizy.com/connection_pooling_with_spring_jdbctemplate_example.pdf
    • http://mixaluximivis.epizy.com/game_flight_simulator_online_2014.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c9.bin
2897409ff6e2f66ad02f9ff7d44f5646a4f40e8566dab0fd1b3b2ab0ff446375
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C9 5112 bytes
font_01_sfnt_off0000f922.bin
2fcdcff7f43491739d4b256391bb7e3c768f9e735c299bb2495fd32085452a2e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF922 9800 bytes
font_02_sfnt_off00011aaf.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAF 4324 bytes