Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe031eeade8027e…

MALICIOUS

PDF

81.3 KB Created: 2021-03-25 18:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a84eb45b02d7a175ebbda48c06b9069 SHA-1: 58d2e113abea261b16166af166e13c845a626e67 SHA-256: 8fe031eeade8027e4c88910a3d96a8fca30636274fffb0bbccf277eb7ca4adf0
136 Risk Score

Malware Insights

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

The sample was identified as malicious by ClamAV and an ML classifier, and heuristics indicate it uses an advance-fee scam lure. The embedded URL 'https://botokaw.ru/wix?keyword=scott+charter+school' is likely part of the phishing mechanism. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used in such lures to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://botokaw.ru/wix?keyword=scott+charter+school
    • https://cdn.sqhk.co/mepapogivoma/aYd0cia/one_result_of_gamete_formation_through_meiosis.pdf
    • https://cdn.sqhk.co/fuvebopeweb/EK8e8ic/nogolerebuvovowefu.pdf
    • https://static.s123-cdn-static.com/uploads/4376358/normal_5fdfc2f18fc7e.pdf
    • https://cdn.sqhk.co/safajoju/jTggnjh/tetanus_toxoid_in_pregnancy_guidelines.pdf
    • https://cdn-cms.f-static.net/uploads/4381988/normal_603b7b531aafb.pdf
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fc94bcd386f7.pdf
    • https://cdn-cms.f-static.net/uploads/4411935/normal_5fe81ef91f947.pdf
    • https://cdn-cms.f-static.net/uploads/4475203/normal_6039ef9716ee7.pdf
    • https://cdn.sqhk.co/pasezateda/hc2Kpjb/rokevaxuxadopitodumevike.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_751a68c76ae3424287dbba771e9d89cc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b683c29b-174c-4e7d-b278-110e774d7053/is_roborock_better_than_roomba.pdf
    • http://kusegewamuzazod.epizy.com/number_1_businessman_full_movie_hd.pdf
    • https://65fca3b3-7ce8-4d56-9bc8-ebe46cc5223b.filesusr.com/ugd/f6ed72_e83cd66c59b94040a6946de7501ea1bb.pdf?index=true
    • https://s3.amazonaws.com/nuxepiduded/characteristics_of_spoken_language.pdf
    • http://zebigibozudival.epizy.com/reforma_antimanicomial.pdf
    • http://vetageluzox.rf.gd/fesalefuvosum.pdf
    • https://uploads.strikinglycdn.com/files/12e5770c-833c-4f06-b9f3-4d18344f2ef4/59470113230.pdf
    • https://s3.amazonaws.com/gotijejaj/best_fat_burning_app_android.pdf
    • https://s3.amazonaws.com/vojapu/chipotle_fax_order_form_chicago.pdf
    • https://s3.amazonaws.com/zunaporam/guvopivigovafedupogapoj.pdf
    • https://uploads.strikinglycdn.com/files/f09f2c45-6bee-4085-b788-8d253bdb1626/83565256547.pdf
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_89ca23f14e1d43339a0fe67144c4c06c.pdf?index=true
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_e195bf6c791f4d8ea275bf515d7a021c.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_off0000ff9b.bin
39fe4221017216e6c3be78a87fdc2f1c3ed5fd7531d2e231aa03143c82274d5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9B 4992 bytes
font_01_sfnt_off0001108a.bin
57b178075f98db9b934e0e2f39edb80d6dae6e9b6b46f49e171bc2311ae18689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1108A 11676 bytes

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