Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd48d64383c6edc6…

MALICIOUS

PDF

166.8 KB Created: 2021-05-23 10:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4388bbac937468a3fd1d6ab39a1e9922 SHA-1: 268460d361569aab4f0b95247d86ffb00b3b0aaf SHA-256: bd48d64383c6edc66aeed88656db2117c2e5abba95398e913b07cb539186eaee
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a malicious domain used for phishing or malware distribution. The heuristic 'SE_URGENCY_LURE' suggests the document content attempts to create a false sense of urgency to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/strik?utm_term=what+do+segmental+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497344/normal_606940c9e03bc.pdfIn PDF document text
    • https://kerozusokenizil.weebly.com/uploads/1/3/1/3/131383247/724645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488335/normal_603856735e29b.pdfIn PDF document text
    • https://tikofasej.weebly.com/uploads/1/3/4/6/134615027/riberugaxamoruj-riraju-sogaj.pdfIn PDF document text
    • https://gavokafiwafez.weebly.com/uploads/1/3/1/3/131381231/1650583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482230/normal_60330f264480c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5ff6c56b84ccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465687/normal_602315ce312fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492575/normal_6018452c4a59b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501208/normal_602f8bcace60d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_603ac4cbc7ab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498978/normal_6046c0744fead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_602d0145189e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452154/normal_5fec2361c7ba3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479942/normal_5fcea1f6508f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_605b6b1ff11dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gudukupir/what_is_the_moral_of_the_trojan_horse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4e0eac-f8ec-4ab4-80fd-44287bbae8f7/sense_and_sensibility_movie_director.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6aa5ac9-25b8-42d6-ad76-1bfd2fbb85d4/addition_of_unlike_fractions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/retukiperizajibap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279140b0-90ca-4aeb-b631-bc2567d72b31/82311314023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7a7904-282f-496c-b0ac-246553e67bb4/80858082324.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C55 2912 bytes
SHA-256: d0763fbd271711262b0a26362cc9c99fb155632731fabfacbbfc72efdb3f7c44
font_01_sfnt_off000236b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x236B8 5156 bytes
SHA-256: 66c61cdb4e7866ef963cebd5480126a460624a10ef5660562c8aef0ceb6ccf3c
font_02_sfnt_off0002482d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2482D 14936 bytes
SHA-256: 51211e3e649bc60edf87c01d5ee4d3eb6acf0053613c79b4ee0de822d6e5389e
font_03_sfnt_off000277e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x277E8 16088 bytes
SHA-256: ba49a359edda73fb432b2118eee43e8681603f6c6f845ef214af08c3a95321db

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