Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab57089eeb897a3…

MALICIOUS

PDF

77.4 KB Created: 2021-03-27 11:18:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 6b0b43716aeb566831ab0f46d6ad7425 SHA-1: b75629a5a274c4be6f9a9a922480deb5dd795756 SHA-256: 8ab57089eeb897a32d52af2c614a7684e823839395ff94085f9a09ba4c4df234
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely attempting to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/123?utm_term=papyrus+undertale+music PDF link annotation
    • http://rijunoje.mygamesonline.org/auto_body_repair_books.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/hiVtnYm/mexigijuvefowuna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_6042ed648c1fa.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/josogalujatek.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/gfij2Kl/jisugorul.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/eypCjdr/lagafelodujerazolekudamav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379848/normal_5fe1c854870fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495269/normal_5ffe7f25307b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5fe7deb3ae1a6.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/fedojigudaj/omron_bp7100_symbols.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7baa2291-edad-4c79-b7ae-0c145633a15f/72037228965.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/beautiful_flowers_hd_photo_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/84355907227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76aaedc-e57e-4cd3-b439-3b985a30f7cd/kizezajoraxiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/derik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d651e937-b591-4758-bc8a-5193015abc39/hp_laserjet_400_mfp_m425dn_driver_for_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8ba9e4-8c71-4eb3-996c-cfb711f45c15/do_androids_dream_of_electric_sheep_chapter_22_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf71507c-d53f-4dda-9864-54122f0f6c1e/tiwolijor.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/is_postage_going_up_in_2021.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF130 5320 bytes
SHA-256: 9183e610edb4e6bb19822c28e3cbec9459c78b1ae536d2e27bd3dba32137660d
font_01_sfnt_off0001033d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033D 10972 bytes
SHA-256: 3e42dbaf32be72b5c790496169311e83db93e005360796f0c90397fa4cdc7e81

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