Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddbff7eb4fefbf96…

MALICIOUS

PDF

125.7 KB Created: 2021-03-17 22:32:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2209a34cdc1411a07940088048be9df2 SHA-1: 77dca9d51278a46ddf5cc6b75ac0fc7a913561dc SHA-256: ddbff7eb4fefbf960121fc0bbb115254714f4b975e881a982fa19cfbb696eee7
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 URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URLs indicates an attempt to direct users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/wix?keyword=digimon+world+4+evolutions
    • http://kmplitka.shop/usce_beograd_kontaktjdtc5.pdf
    • http://nopotaz.medianewsonline.com/purivo.pdf
    • http://dororuminaxa.mywebcommunity.org/nokapur.pdf
    • http://natfreshik.fun/72192407531qfk2y.pdf
    • http://am-sound.ru/884150091746sah0.pdf
    • https://cdn.sqhk.co/xamitarerivu/8Lehhe5/cat_kitten_playing_cards.pdf
    • http://linodogeb.scienceontheweb.net/pegem_aday_retmen_kitab_2020.pdf
    • http://ujjjrrrrr.space/81799945887o3e2l.pdf
    • https://cdn.sqhk.co/kigimole/2FVjczW/lomomenopibenogelu.pdf
    • https://cdn.sqhk.co/jotapepikota/seigBgd/63263464524.pdf
    • http://rawenspant.online/helo_status_app_tamilqyj69.pdf
    • https://cdn.sqhk.co/titesojijuko/dpjhBge/tidurisibosevisimo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://4f870d4f-701c-4ec6-bbb3-7277acc5528a.filesusr.com/ugd/fdcb8d_b68cf305f45345e1935e16ab48bfc6ea.pdf?index=true
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_2a44afcce2364e27bb71f878c6eb74d6.pdf?index=true
    • http://turixupifebut.epizy.com/bmct_terminal_berthing_report.pdf
    • https://ffcd7f67-9b43-45c2-8e44-b15cca9583b8.filesusr.com/ugd/48bf55_4d4e6f73c9274fea9eca9b41d5ce2de2.pdf?index=true
    • http://zevusup.atwebpages.com/james_baldwin_go_tell_it_on_the_mountain_sparknotes.pdf
    • http://poramukuwulaji.epizy.com/printable_month_calendar_template.pdf
    • http://todiwefexoneb.atwebpages.com/lok_sabha_election_date_2020_download.pdf
    • https://a91873a8-1f5b-4151-915d-af39eb211f25.filesusr.com/ugd/3f80ec_57bc007b3d1643e7b5f1ff8979878eee.pdf?index=true
    • http://dijutago.rf.gd/dexazaxowam.pdf
    • http://fanuzisi.epizy.com/41218250043.pdf
    • http://zamoguwudegovo.rf.gd/lotigididebaweguwefamixi.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_off00016ccd.bin
66ab32394bc7aeb11a953dc9b67c8e78afba6888e397ec431152bbad4184d1ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16CCD 20876 bytes
font_01_sfnt_off0001ae0c.bin
57821eaa32a95099a1c1a5c22922391e18e1a265caeed7d8d37d18b939ecf274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE0C 5172 bytes
font_02_sfnt_off0001bfb2.bin
082754b5a5c91fe11e033d0a56547b14265b73c935569d87d64d045016e2fc05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFB2 12300 bytes

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