Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7872d248178872…

MALICIOUS

PDF

70.7 KB Created: 2021-04-06 03:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 000f2567a7eb2bb1e704b27a1109b90b SHA-1: ce4c87b391cc5bf3bc72d6a87b60b85a2c98ac0c SHA-256: 0d7872d2481788721868490c3d497fb34dced085fcd084a71af77eb97fa3066b
116 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, consistent with callback phishing or tech support scams. An embedded URL was also extracted, which could lead to further malicious content or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jottigo.ru/wix?keyword=qwik+pack+%2526+ship+andrews+road+fayetteville+nc PDF link annotation
    • https://cdn.sqhk.co/wimiwupo/wjiPMjn/22934246233.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/Djjheha/bass_booster_equalizer_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_5fdaeab0e0551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492253/normal_604134b22770d.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/duhdlgg/health_tips_for_seniors_in_the_spring.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/hbcgeKw/frontiere_europe_ouverte_coronavirus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417206/normal_600afca736017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/47460cd4-efb0-42ae-992f-fc0032057979/uppababy_vista_2017_double_configurations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0998ca23-a7a0-4ef6-b116-fe46edb5ad4f/rilipevaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/54015672035.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/pasavuwajevapezipexaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3b6590-9677-4aac-a584-c4caf7a68f5e/nodevilasatipobebojuvam.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/13072699273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f856855d-a542-41cc-9d30-d61e0c0c106b/trane_humidity_control_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/49820259208.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/serupiwom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a9ad9a-437a-47f9-ab7e-77de750987f6/nesibogikazubapadokule.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/tigubopabo.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/information_about_france_army.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/somovupazukezuxati.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/10626389136.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD74 4212 bytes
SHA-256: 255045174d1f3b8544e5d77454854b03326d010e4d4c7ff26776faf2609e1581
font_01_sfnt_off0000dbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCA 10580 bytes
SHA-256: 59cb148edf53c831c4f202ce127f477434044dd9d4dd918b56999aac6d0dc2a1
font_02_sfnt_off0000ff33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF33 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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