Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6733e53c3484e15…

MALICIOUS

PDF

66.7 KB Created: 2020-12-14 00:37:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18355cdc1dcf70b3e039fad8123894f6 SHA-1: d4502af8c84dc271940d6c32611fa6226b637ddc SHA-256: e6733e53c3484e15d62b32e3f42167ee04d6343c53d0419028da2e67c61af2a0
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to academic content, suggesting a targeted phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=macroeconomics+theories+and+policies+froyen+solutions+pdf
    • https://cdn-cms.f-static.net/uploads/4459036/normal_5fc0fb2c38f66.pdf
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5fa54f5b61b14.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f453fc0c-4b3c-4a2c-84ec-7318467698c2/zakifutefavuzifam.pdf
    • https://s3.amazonaws.com/sazixipame/texulovofanutim.pdf
    • https://static1.squarespace.com/static/5fc0e3ecc14dfd36fef16b99/t/5fc3294c5147b148049a69f1/1606625613703/impaired_gas_exchange_care_plan_related_to.pdf
    • https://s3.amazonaws.com/kabisebax/aphria_earnings_report_time.pdf
    • https://static1.squarespace.com/static/5fcf2bbecb3b830a1a321236/t/5fd13ae50e16cf679961a783/1607547624084/84685666491.pdf
    • https://s3.amazonaws.com/rokuwapesu/38800921002.pdf
    • https://static1.squarespace.com/static/5fc129dd17e7202640ebdc1b/t/5fc384ef3f75b166434195c2/1606649074389/macbeth_character_list_in_order_of_appearance.pdf
    • https://s3.amazonaws.com/tinivukedeta/motion_for_continuance_template_florida.pdf
    • https://s3.amazonaws.com/tuletivotarupu/pallet_wrapping_machine_operation_manual.pdf
    • https://static1.squarespace.com/static/5fc17dd3405d5340f32dc63c/t/5fc2f11b4f9837572040c5c8/1606611229389/psychic_predictions_for_2020_rick_tobin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6e4.bin
6d6d8eeefa42d00afa93e1851a1748a216cd8578c1077d3f3b69214d457a747e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E4 5384 bytes
font_01_sfnt_off0000c90a.bin
9dea4331ac3922335145e1aec7185d771d585fe15809557965a919087120cae7
pdf-font-stream PDF embedded font (sfnt) at offset 0xC90A 10668 bytes
font_02_sfnt_off0000eda2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 4324 bytes