Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a71b05db224a538…

MALICIOUS

PDF

106.1 KB Created: 2021-03-18 08:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce2f38d867d185623306512ad769a4eb SHA-1: 65f55b819930457d90660a9b74363f77b5260500 SHA-256: 3a71b05db224a5384d02becbb15470d3f0790aedb85e851fa7b0a0aeb31b5c14
136 Risk Score

Malware Insights

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

The file was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate it contains an external URI and an advance-fee scam lure, suggesting it's designed to trick users into visiting a malicious website. The embedded URL points to a domain associated with phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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/award?keyword=risk+management+and+insurance+mba+notes+pdf
    • http://zelopaqq.xyz/me_gozare_en_tu_presencia_jehova_juan_carlos_alvarado_acordesia4sl.pdf
    • https://cdn-cms.f-static.net/uploads/4491686/normal_603871e04cdac.pdf
    • https://cdn-cms.f-static.net/uploads/4482847/normal_601ee93d07598.pdf
    • http://nunovoxiwanafuz.getenjoyment.net/does_ozone_make_good_bikes.pdf
    • http://mufutekuson.getenjoyment.net/pimizesuxo.pdf
    • https://cdn-cms.f-static.net/uploads/4477386/normal_602dffbfb014b.pdf
    • http://kesomud.iblogger.org/79700316946.pdf
    • http://rasidafepu.mypressonline.com/poronolabexuzex.pdf
    • https://static.s123-cdn-static.com/uploads/4447096/normal_5ff867d57db42.pdf
    • https://cdn-cms.f-static.net/uploads/4444096/normal_5fd6628bc163c.pdf
    • http://nuveclovet.xyz/apache_software_foundation_tomcat_8._0_free3ohhc.pdf
    • http://digitalcalakk1.xyz/how_to_calibrate_a_cobra_29_nw_ltd_classicfdhmu.pdf
    • http://harkateine.fun/59535535945l50g6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_1427737f3e454a30b402d8f70ec386b2.pdf?index=true
    • https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_3fc01d903e96432da48f195a2dc41f12.pdf?index=true
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_317f5cc9842d4eabac0e214b428c0887.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4373452b-cb06-4bd3-869f-0e5d404f79a7/how_much_did_hancock_make.pdf
    • http://volowunodevikel.rf.gd/tepekivaxitosurizoputud.pdf
    • https://uploads.strikinglycdn.com/files/b24619f8-e924-4d65-ab3b-6d8c377866e2/stanley_fatmax_powerit_1000a_charging.pdf
    • http://dopovis.myartsonline.com/25809378466.pdf
    • http://xipobibupo.epizy.com/bmw_e46_gearbox_oil_seal.pdf
    • https://f0d491a7-7d72-4eea-bbd3-72ad31f48a9a.filesusr.com/ugd/1acdab_cdb501620304458081230a7a1a5a82c9.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_off00015e51.bin
f2ff6c9ff07545b53c2e7ccc4c525333c93e05f72b61beb187cf4f086cb509a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E51 5652 bytes
font_01_sfnt_off00017177.bin
46542ad3b9a82e5a9cea3fbb114287f4c1a962321aecba7380f24971c1ccfdd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17177 12320 bytes

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