Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6dd66efada5cca9…

MALICIOUS

PDF

80.8 KB Created: 2021-03-18 12:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 309b33468963687b13ec4696829e9d2f SHA-1: ec30e2c0779fdd8e9408cdc40fbb34459f16a8ac SHA-256: d6dd66efada5cca9f633629d55c902c0c137e7fca7a82c43fa34daf33133363a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain that is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to be a lure related to a battery charger manual, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=everstart+plus+battery+charger+40a+manual
    • http://fitnesspack.net/extraos_12_cuentos_peregrinospipl7.pdf
    • http://peludofnor.fun/anime_cyclops_shoujo_saipu_batch8ph8d.pdf
    • http://canonsburglake.org/manhattan_new_york_Citydeki_ucuz_otctwcm.pdf
    • http://hydrofthol.space/440794347499v2t3.pdf
    • http://sodahq.pro/noxudumugopesck64u.pdf
    • https://cdn.sqhk.co/xusarukave/hjcigYS/43298251566.pdf
    • https://cdn.sqhk.co/zupuguvawaj/jgigjIa/judumiloxuxax.pdf
    • http://arfeshome.com/shark_rotator_professional_nv501_partsza5bb.pdf
    • http://mishabelle.ru/pabusofusumonalekafok8hqvt.pdf
    • https://cdn.sqhk.co/jaselavujuwi/hfFeZ8f/97924095241.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f51d6a9f-bd70-4835-8ec6-716ffe18a335/unity_hub_download_size.pdf
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_25afcbfea6fc43b39d4058bcd7694fea.pdf?index=true
    • https://s3.amazonaws.com/falejogajir/how_to_change_a_wick_in_a_kero_sun_omni_105_kerosene_heater.pdf
    • https://s3.amazonaws.com/muxozuvalubi/69711673836.pdf
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_cdfb8717651e48a0a4ccc703a07d30b6.pdf?index=true
    • https://s3.amazonaws.com/nitidadufetenu/33978230671.pdf
    • https://s3.amazonaws.com/xoguwavosuje/6657913870.pdf
    • https://s3.amazonaws.com/gujutavevive/bcsc_ophthalmology.pdf
    • https://434dcbc4-7bd9-40fe-99bf-e102daebf961.filesusr.com/ugd/07ef24_e3115adef1a9410baa471ec930cacc5c.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_e690c4a7dd2d431bacfa4dca5136bedf.pdf?index=true
    • https://uploads.strikinglycdn.com/files/273318ac-3fbd-431b-9118-c425f035d9bf/pete_the_cat_school_shoes_animated.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_off0000fc20.bin
0138a20d0aaaa3808a2396759f8ac58a0f9559c41802f379d90e2e1f40298b1b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC20 5836 bytes
font_01_sfnt_off00010fe6.bin
0fae77c446e59e6772fd9ad7cd4e794d892eb903bbe69a92b46cd9970ad3f90f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE6 11312 bytes