Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2d4a38435ee21a…

MALICIOUS

PDF

98.4 KB Created: 2021-03-18 15:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7466ab7d20208efd8bb3e241d374bde1 SHA-1: 6f08f4cb72835c10cf3e9fd101eaef7d50ae9c83 SHA-256: cd2d4a38435ee21aca65f0e33c57c6fdcac15fa9628b36f0df0928b22af48c44
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses an advance-fee scam lure, presenting itself as financial forms to trick the user into clicking an external link. The presence of an embedded URL suggests an attempt to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=brighthouse+financial+printable+forms
    • https://cdn-cms.f-static.net/uploads/4489054/normal_604a45032014c.pdf
    • http://sabofogetazo.22web.org/87756131488.pdf
    • https://cdn-cms.f-static.net/uploads/4484370/normal_60482d526ae47.pdf
    • https://sipovabamekejo.weebly.com/uploads/1/3/5/3/135391609/ffdd629.pdf
    • http://hotloveme.online/verbos_regulares_e_irregulares_en_ingles_listado39aw8.pdf
    • https://cdn.sqhk.co/rotogogoji/FibNeGa/air_raid_siren_sound_mp3_download.pdf
    • https://pagebuso.weebly.com/uploads/1/3/5/9/135972497/xogib.pdf
    • http://3203epworthcres.com/fall_on_your_knees_lyricsmjle7.pdf
    • https://fofifakexetag.weebly.com/uploads/1/3/4/3/134345684/zujexexe_fizevusigo.pdf
    • https://zovakilezogavi.weebly.com/uploads/1/3/1/1/131163957/jupuketod.pdf
    • https://cdn-cms.f-static.net/uploads/4461786/normal_60245ae35b6a5.pdf
    • https://pukokisawar.weebly.com/uploads/1/3/4/7/134749025/0b0cd.pdf
    • https://dulijijinigukal.weebly.com/uploads/1/3/5/2/135297200/tawiredotitetede.pdf
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/fiwepezosufaz-kafoze-lutijapunenuti.pdf
    • http://domainlimax.xyz/329492595918yotp.pdf
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdf
    • https://ranetaxute.weebly.com/uploads/1/3/4/8/134886021/jotewukenojinepexido.pdf
    • https://cdn-cms.f-static.net/uploads/4420018/normal_603c34742e913.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://monimupanib.epizy.com/kogedebevo.pdf
    • http://rujemivegelap.epizy.com/how_to_download_wii_virtual_console_games.pdf
    • http://gazunobopa.epizy.com/83592545877.pdf
    • http://mibawojerasubuw.rf.gd/pinuresopopezorax.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f17.bin
3ccb026c2cba4a261da88f76a49d6bd367cb15994e506393bf75a5ff585b8540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F17 5500 bytes
font_01_sfnt_off000131a3.bin
6a31dcf3364568d6c56964abedf101b2c973f369f7ce9b24e67ebbd669708ba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131A3 11304 bytes
font_02_sfnt_off0001585e.bin
00468df452218f546d59995a7cf9b4297092e2fd476dbd2f6ce79846bd051107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1585E 16140 bytes
font_03_sfnt_off00016d5a.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D5A 4324 bytes

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