Malicious PDF — malware analysis report

Static analysis result for SHA-256 b24ff7f209474865…

MALICIOUS

PDF

100.9 KB Created: 2021-03-17 02:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 040845842c542073bad5f8a7603dd332 SHA-1: 492148608149f3861702237d8cfa2886a09fb711 SHA-256: b24ff7f20947486558f42884ed0886fd760ff4267a83b8ac9bd4d144c214b6f7
96 Risk Score

Malware Insights

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

The sample is a PDF document that contains embedded URLs, one of which is `https://resalured.ru/wix?keyword=bugaboo+cameleon+instruction+manual`. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as `Pdf.Phishing.Trojan`. The presence of multiple external URLs suggests a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=bugaboo+cameleon+instruction+manual
    • https://cdn.sqhk.co/ruxuvedije/iT0ifZc/hot_rod_cartoon_artist.pdf
    • https://cdn.sqhk.co/rufopunuk/eggghjj/drifters_burgers_near_me.pdf
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/f08ab.pdf
    • https://vizufawamowimo.weebly.com/uploads/1/3/4/7/134700475/vevixil.pdf
    • https://gigijegijozi.weebly.com/uploads/1/3/4/4/134400985/8615898.pdf
    • https://kapelivoxiri.weebly.com/uploads/1/3/4/0/134040857/xakemajokez.pdf
    • https://cdn.sqhk.co/womawuxinuge/gfyjdOx/5437489108.pdf
    • https://cdn.sqhk.co/vutazekerubu/3jhqc4I/influencer_marketing_jobs_remote.pdf
    • http://tenipimutav.mywebcommunity.org/54634487731.pdf
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/97c019f6b07.pdf
    • https://cdn.sqhk.co/tekunipifob/RxiiicL/galaxy_invaders_alien_shooter_gift_codes_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8f2585f8-f7c9-4059-8870-ae01e12f7df8/cisco_sg200-50p_firmware.pdf
    • http://vedixemalirugi.atwebpages.com/ancient_rome_history.pdf
    • https://uploads.strikinglycdn.com/files/3959e740-4bfc-4291-8c3e-99246aeca3d7/55179952006.pdf
    • https://uploads.strikinglycdn.com/files/ce3e01eb-131d-488c-9c7a-12c7433e92d5/16570239035.pdf
    • https://s3.amazonaws.com/luxelula/nepewotenuritasekuvujuxif.pdf
    • https://uploads.strikinglycdn.com/files/e7e20920-3301-450d-9d80-8ad3ec19154d/lagobab.pdf
    • https://uploads.strikinglycdn.com/files/da06a153-85fb-439e-a2cd-91e8bcc9da91/how_are_chemical_formulas_determined.pdf
    • https://s3.amazonaws.com/jefazaxal/28380553714.pdf
    • https://uploads.strikinglycdn.com/files/e23e5e6f-af18-4750-b3f9-f9d8064fa33f/beginner_piano_books_free.pdf
    • 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_off00014e00.bin
4e2755d6f4ce946871c22c5ae3b9031749ec2bbb7e9a7ce9e6d088274250f601
pdf-font-stream PDF embedded font (sfnt) at offset 0x14E00 5308 bytes
font_01_sfnt_off00015ffa.bin
7715328a9c463a6ffb81794cfb53adb4391dc21cf0f07aa5714ed0c70caf15cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x15FFA 11636 bytes