Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e4304f793ee98d…

MALICIOUS

PDF

119.1 KB Created: 2021-03-22 17:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9e4abe9ff41fc832e0119c3f6faf656 SHA-1: d6e75fe9ef5fdbf910a1b1ba0a246334f91f49cf SHA-256: 48e4304f793ee98dd7ed485bb28304d0cc452f6bf2d1526fab6f9f2ae588634a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains numerous external links, suggesting a link farm or phishing attempt, with one prominent URL being 'https://dafemum.ru/wix?keyword=world+series+of+poker+apk+hack+unlimited+money'. The document body, though heavily obfuscated, contains keywords related to the lure, reinforcing the phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/wix?keyword=world+series+of+poker+apk+hack+unlimited+money
    • https://bunavomotuta.weebly.com/uploads/1/3/4/6/134606544/c04df0c7bf6.pdf
    • https://dujisiseruw.weebly.com/uploads/1/3/0/7/130776106/falabiputosox.pdf
    • https://kebuwusatame.weebly.com/uploads/1/3/5/3/135343151/e233ad9abf.pdf
    • https://legokozupanodul.weebly.com/uploads/1/3/4/4/134492876/bakava.pdf
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/1510691.pdf
    • http://bisapusid.mypressonline.com/rorerowuwatodedilekexule.pdf
    • http://gutemelav.22web.org/zivofilezemabumo.pdf
    • https://genolawibiwiz.weebly.com/uploads/1/3/4/3/134316454/polov-rapogopub.pdf
    • https://cdn-cms.f-static.net/uploads/4367646/normal_6009cdb9d0a51.pdf
    • https://cdn-cms.f-static.net/uploads/4503791/normal_602244b5246b0.pdf
    • https://nipixejewawowe.weebly.com/uploads/1/3/0/8/130874539/kovub.pdf
    • https://basivuto.weebly.com/uploads/1/3/4/6/134646412/4093331.pdf
    • http://zamowafa.mywebcommunity.org/fopasetod.pdf
    • https://lonunirixug.weebly.com/uploads/1/3/2/7/132710494/melatiwivibezidelok.pdf
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5fd7d11780d0b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mojogoralil.onlinewebshop.net/application_letter_for_employment_sample.pdf
    • http://lexaxixamu.rf.gd/role_of_nurse_in_critical_care_unit.pdf
    • http://zupitatip.atwebpages.com/61502635617.pdf
    • http://weponigonimogo.myartsonline.com/wabuvazarimuwupibibeziju.pdf
    • http://kepagewav.atwebpages.com/komoninegivilefi.pdf
    • http://venavabumekaj.epizy.com/zokujojorifefazipegisuxim.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_off00019419.bin
016d3970cb9f56c8a0c6208a2bbd492101bc9d896f7cc4b1cc8670fde2a655eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19419 5576 bytes
font_01_sfnt_off0001a6f9.bin
d04145a2c0901cd8689621171773815bb7ca67eb852edfd09fd00e5441704e59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6F9 11652 bytes

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