Malicious PDF — malware analysis report

Static analysis result for SHA-256 e225bcb7d2d6fdaa…

MALICIOUS

PDF

74.0 KB Created: 2021-02-23 10:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 619dd5180532089a195d02c5c66e88af SHA-1: 204612701b705c4637a501c6cf1504ff0fe140a1 SHA-256: e225bcb7d2d6fdaad7aace98b8a3738ffae3062ecb83f0693df5b13afde7f05b
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, indicating a high probability of malicious intent. An external URI pointing to 'druttle.ru' was found, suggesting a redirection to a potentially malicious site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a game title, aligning with a lure for phishing or malware distribution.

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://druttle.ru/wix?keyword=grindcraft+2+unblocked
    • http://airet.space/house_painter_las_vegas_reviewshxd4c.pdf
    • https://cdn-cms.f-static.net/uploads/4419633/normal_5fd18a94b7fcf.pdf
    • http://storeplus.info/launcher_android_oreo_8._1_featuresrhk39.pdf
    • https://duzesoduvumasu.weebly.com/uploads/1/3/4/1/134131570/bf078405.pdf
    • https://mogewojelepa.weebly.com/uploads/1/3/4/6/134681452/suzadita_vebamufipe.pdf
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/miwufefinisu.pdf
    • https://cdn-cms.f-static.net/uploads/4494136/normal_6013685327615.pdf
    • https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/nolatowasevaz.pdf
    • https://cdn-cms.f-static.net/uploads/4386622/normal_6013be863814c.pdf
    • https://cdn.sqhk.co/bevizewo/a9SgcU3/48374362301.pdf
    • http://verifybadgesbusiness.com/zugiwuxogivebipiwalaeuhyq.pdf
    • https://cdn.sqhk.co/sisamide/Eid7icK/dotuligonun.pdf
    • https://wawisutifefot.weebly.com/uploads/1/3/0/7/130739430/cb52651d50d7b.pdf
    • https://static.s123-cdn-static.com/uploads/4482870/normal_5ff8a3eb7d05b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lebodevafetag.epizy.com/what_are_all_the_unforgivable_sins.pdf
    • https://s3.amazonaws.com/povelenavuviw/oracle_10g_sql_pl_sql_sqlplus_download.pdf
    • https://s3.amazonaws.com/sixolose/47141678361.pdf
    • https://s3.amazonaws.com/tiduro/equality_and_diversity_worksheets.pdf
    • http://xebinuv.rf.gd/canon_5d_mark_4_eos_utility.pdf
    • https://s3.amazonaws.com/norozovijalu/nokia_ce0168_model_name.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_off0000e67b.bin
6b853a4a16c4240434d866c15b6a5118ad184aaa4b8d1eaa7a8258e0e2a2835a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 5204 bytes
font_01_sfnt_off0000f844.bin
365ab477967ae6dd98590d538c14e9dbfabb454f3d98addc5c7266dffcf9d45c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF844 10028 bytes