Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d9ea10abce01da…

MALICIOUS

PDF

76.4 KB Created: 2021-04-04 21:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 158e70f417721c6a337d0fb4ecc63b04 SHA-1: de351759c19d2a13af6d58312890dfe3f1c3f250 SHA-256: f6d9ea10abce01daba4167294d5d428166964d73c34c8ded3861fc869198958e
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 deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to 'rite of summoning witchery' and the wkhtmltopdf application, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=rite+of+summoning+witchery
    • http://gagitevanonuti.mywebcommunity.org/capablanca_chess_games.pdf
    • http://sarawavenudiwap.mygamesonline.org/scrabble_word_list.pdf
    • https://nesujuge.weebly.com/uploads/1/3/1/4/131407687/vebemoxikitakidav.pdf
    • http://saxosoxajivovud.medianewsonline.com/house_ownership_certificate_telangana.pdf
    • http://pivojowemetobiv.mywebcommunity.org/24279498108.pdf
    • https://zamamuxito.weebly.com/uploads/1/3/4/2/134234866/7657260.pdf
    • http://gaxesujite.medianewsonline.com/xurefumujafedimikag.pdf
    • http://vadosixajobirug.mygamesonline.org/standard_dachshund_breeders_north_carolina.pdf
    • http://zisuroto.mygamesonline.org/acheulean_industry.pdf
    • https://sitadubudotewor.weebly.com/uploads/1/3/5/3/135335426/7b94fd12d2b74.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/97b91b1d-3b3d-432d-8cd8-dc3ea2bf2f68/93877770217.pdf
    • http://mejumobax.atwebpages.com/arbeitsvertrag_muster.pdf
    • https://uploads.strikinglycdn.com/files/729d4569-10b1-4f79-a1d6-a55122d1e766/kesuvinasapugox.pdf
    • https://uploads.strikinglycdn.com/files/ac935daf-0d41-4e1b-81b8-be6ac10bea13/kawewanojemoboguxobizeb.pdf
    • https://s3.amazonaws.com/vobuturinivi/tomamojowoza.pdf
    • https://68fdcf0a-b1f0-4758-9edf-48d2be6d990b.filesusr.com/ugd/ac51ce_c064147d075a452a8b03d06f0478ed38.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2ef0ce94-e0ab-453d-9cfb-eb2c02379814/55541676690.pdf
    • https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_ec5a2b9d5cbf40cb976e616dc2d8c718.pdf?index=true
    • https://s3.amazonaws.com/ribowexulo/walloop_mod_apk_unlimited_keys.pdf
    • https://8c77b9b7-c39b-43d6-9406-6086bd2c0f93.filesusr.com/ugd/ee6770_a5d10f957d884183adde1a02a189d10f.pdf?index=true
    • https://s3.amazonaws.com/xufujofaleki/80546049894.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_off0000e079.bin
b8928ee1de06653ca538b73a0923f7f42cdee8c115fa88020a846e0daa113d27		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 3808 bytes
font_01_sfnt_off0000ee21.bin
6a35c190133607a042ae3b90cb677b067d1a9e631983905fa25a1bca5620683c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE21 5252 bytes
font_02_sfnt_off0000fffc.bin
df64e31bf6d4654d0ce3788e182d08412eef3ad67d5e4955adb26ec60b74dac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFC 10360 bytes

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