Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a5823836b35eab…

MALICIOUS

PDF

183.0 KB Created: 2021-04-05 19:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fc785615d628d63c3bb4e06f811eaa5 SHA-1: d144ed8934809d7c61eb87edf4eee2d13baa882a SHA-256: 02a5823836b35eab0c52342c3fed1c75f23498695c485b21fd523b671b0244fd
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was identified as malicious by ML classifiers and ClamAV, with heuristics indicating an advance-fee scam lure. The document body, though heavily obfuscated, contains references to 'Clat question paper 2015 with answers' and 'wkhtmltopdf', suggesting a deceptive lure. Multiple external URLs were extracted, indicating potential redirection to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://vilenefex.ru/123?utm_term=clat+question+paper+2015+with+answers
    • https://webuwexuzebonal.weebly.com/uploads/1/3/0/7/130775053/96e4d71fc3056.pdf
    • https://static.s123-cdn-static.com/uploads/4489980/normal_5fe1ac269e998.pdf
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/bomadoxexoz.pdf
    • https://cdn-cms.f-static.net/uploads/4450046/normal_601348b359d86.pdf
    • https://bumozirejukije.weebly.com/uploads/1/3/5/3/135340746/dcef90.pdf
    • https://cdn.sqhk.co/nigezufi/xhidTFX/33940430236.pdf
    • https://rixeludabigadak.weebly.com/uploads/1/3/0/9/130969597/lotapunipafab.pdf
    • https://bepupoxusiboma.weebly.com/uploads/1/3/4/8/134847186/runixafu.pdf
    • https://cdn-cms.f-static.net/uploads/4469105/normal_6058a75f0d581.pdf
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/2182391.pdf
    • https://bazifimu.weebly.com/uploads/1/3/4/6/134661545/dekizamotofenab_liwire_satumelibokifet_menepagekuz.pdf
    • https://fafovufurivu.weebly.com/uploads/1/3/2/6/132695925/jovegag_ferezubevar.pdf
    • https://cdn.sqhk.co/saguregifu/gA5jbJR/cannon_shooter_motive.pdf
    • https://cdn.sqhk.co/pufowuvikij/mZigdHj/my_talking_tom_hank_game_download.pdf
    • https://cdn.sqhk.co/bemaxopig/d4he2P7/edf_smart_meter_not_showing_electricity_usage.pdf
    • https://cdn-cms.f-static.net/uploads/4415526/normal_60464ade89e50.pdf
    • https://cdn.sqhk.co/nikofejujel/djjghbz/wapking_jeet_movie_song.pdf
    • https://static.s123-cdn-static.com/uploads/4375087/normal_5fec1dd570b56.pdf
    • https://bafonalilazuxi.weebly.com/uploads/1/3/4/7/134731076/4074572.pdf
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5fd26c5f6fb3b.pdf
    • https://cdn-cms.f-static.net/uploads/4418167/normal_600be9fb48735.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_2d26064e6e444c4cba506467f4ae3023.pdf?index=true
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_975ca920c0a54d3d91f039085b1e8fd8.pdf?index=true
    • https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_b16061f261324ea98b3e772b02734540.pdf?index=true
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_cde8cbbebb944ba5aee3dd8d51964c70.pdf?index=true
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_10ff1b02016846bdb3041b7e70901534.pdf?index=true
    • 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_off00028ec5.bin
d530e7a89f4523b5a1967f1b8946b8421777f2818c0bd60dc4399d1eeeba21f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28EC5 5480 bytes
font_01_sfnt_off0002a17f.bin
822bf48f240cdd80296898b1760119abcca3f1b7cd14b28557561eae516ad323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A17F 12608 bytes

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