Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e48baebcd91c134…

MALICIOUS

PDF

79.1 KB Created: 2021-03-20 01:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1523b32dfc6ff80e0c9b99fdacd5ad0c SHA-1: 9e620e129202526c37bbd433a259d1f0a0574d60 SHA-256: 0e48baebcd91c1349a9ebc02214b52a1fc6bf0be494151ffe9a32e61438f2609
104 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. The embedded URL `https://fokemale.ru/award?keyword=payment+terms+and+conditions+pdf` combined with the heuristic `SE_INVOICE_LURE` indicates a phishing attempt disguised as payment terms. The PDF structure and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://fokemale.ru/award?keyword=payment+terms+and+conditions+pdf
    • https://cdn.sqhk.co/tuwetebep/9KjgheM/defender_ii_mod_apk.pdf
    • http://goloszauniver.fun/terokigipuruvelemi34321.pdf
    • https://xogalorezekulim.weebly.com/uploads/1/3/5/4/135400954/medufuponow-fixukex-boririb.pdf
    • http://easylearning.space/anti_aliasing_filterfajts.pdf
    • http://sberbank.link/hp_laserjet_pro_400_m401a_printer_driver_download_for_windows_xpufv0s.pdf
    • https://cdn.sqhk.co/tizudukokeni/0gNKiex/girakeke.pdf
    • http://fejukoturig.medianewsonline.com/the_kartilya_ng_katipunan.pdf
    • https://dazifefizax.weebly.com/uploads/1/3/4/8/134854215/nerapofi_vevorezujeti_vovijum_puwazomumatome.pdf
    • http://larts.digital/12976793464m89ie.pdf
    • https://cdn.sqhk.co/dorodidur/qutjjji/bodedavakawosizesi.pdf
    • http://trenolgia.buzz/gesevaxonakepumomezed9f1v.pdf
    • https://cdn.sqhk.co/wadusazilox/gihjcjh/spoken_english_learning_apps_free_download.pdf
    • http://natbeach.space/zoxuzorojubitaruacstj.pdf
    • https://cdn.sqhk.co/difigobon/jdhbHhf/bricks_breaker_infinity_mod_apk_download_android_1.pdf
    • http://volalagokiva.sportsontheweb.net/functionalist_perspective_on_family.pdf
    • http://tesocoin.online/dork_diaries_11_trailerpdh1e.pdf
    • http://fasekafalig.scienceontheweb.net/imperial_leather_mcclintock_summary.pdf
    • http://wwwbcpzonasegura-viabcp.com/how_to_reset_irobot_roomba_9607q450.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/widuxade/48215768464.pdf
    • https://s3.amazonaws.com/womirofop/72228787934.pdf
    • https://s3.amazonaws.com/baxegezivumi/hindu_ppt_templates_free.pdf
    • https://s3.amazonaws.com/xotomisen/70675644963.pdf
    • http://nununad.myartsonline.com/duxule.pdf
    • https://s3.amazonaws.com/mesotodimus/21240290257.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_off0000e92a.bin
e0a9a7443fe3efc79c0b33d4814c709c957eeab0e69bd3ebf7652f0f4030eca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE92A 5160 bytes
font_01_sfnt_off0000fa94.bin
f23e86460f773ddec27acbc5dfe2ac6493eb48995bdbb2b478b5488a1c68cc6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA94 11276 bytes
font_02_sfnt_off000120c0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120C0 4324 bytes

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