Malicious PDF — malware analysis report

Static analysis result for SHA-256 396f72659ca7d158…

MALICIOUS

PDF

74.2 KB Created: 2021-03-19 23:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bec5d664098095bd762b3597800282a SHA-1: 259c0360bea5282b58950a5c28244f8f9870b2fb SHA-256: 396f72659ca7d1585cfaa53c33822ecbaaae38a3ed0b38462e1a2d5d7d121ebe
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be part of a lure, directing users to a site that likely hosts a malicious payload or phishing page. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=client+first+goldsboro+nc+fax+number
    • http://wacc-cat.org/89398763598mph0z.pdf
    • http://negozio50sconto.info/dc_comics_encyclopediall4a5.pdf
    • http://fixebojamofi.iblogger.org/reset_lexmark_ms310dn_to_factory_defaults.pdf
    • http://particulieres-societegenerale.best/31374840980fomm9.pdf
    • https://cdn.sqhk.co/vemoderama/PihiraH/mozilla_firefox_47_for_windows_7.pdf
    • https://cdn.sqhk.co/gaxudofexal/5u4fJgh/alarm_clock_that_plays_amazon_music.pdf
    • http://memubalejegezur.66ghz.com/security_officer_training_manual.pdf
    • https://cdn.sqhk.co/duputokodoz/eScjdTq/dapexevewo.pdf
    • https://cdn.sqhk.co/zovigobut/fV2ojcR/40484788156.pdf
    • https://cdn.sqhk.co/zenekukera/ggahdp6/cash_rewards_ninja_fruit_slice_master_game_mode.pdf
    • https://cdn.sqhk.co/fotutubujuf/vhhdHKr/wrestling_revolution_3d_unlocked_apk_free_download.pdf
    • http://ilkertr.shop/pinagesebezewekajalugixubh6tfw.pdf
    • http://gaxenop.medianewsonline.com/mesosababegito.pdf
    • http://mujudesuxiropa.sportsontheweb.net/sat_2020_test_dates_and_locations.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lenadupubop.rf.gd/tokoxizawofexababojumuwa.pdf
    • http://relimimukavewuj.rf.gd/6837366807.pdf
    • http://jakiwokokik.epizy.com/20173860650.pdf
    • http://zazupixuwup.rf.gd/pojedupajalowojego.pdf
    • http://birotizedu.epizy.com/97636328624.pdf
    • http://duzixaludu.rf.gd/cuneiforme_laterale_piede.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf5e.bin
4115dd0869c709d625a971c2a0deeee1af3a11218730f03909821c335426f9db
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5E 5456 bytes
font_01_sfnt_off0000e1dc.bin
d8ae8b3833fee16d2f1edca6b704f43ba3e32d47a264dd9a4141dd6a0e73f32a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DC 10632 bytes
font_02_sfnt_off000105e9.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x105E9 16204 bytes