Malicious PDF — malware analysis report

Static analysis result for SHA-256 29996388b2fc6736…

MALICIOUS

PDF

73.6 KB Created: 2021-04-20 04:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d87a99c4129cda4ba2552d1eff3cd687 SHA-1: 6199eff5f50ff20a8a93905becff6d297f348437 SHA-256: 29996388b2fc67365f4e378d0d78456cc818295db63cdf30228cb37ac5a0bc59
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a disguised search result, further supporting a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://soxebez.ru/strik?utm_term=how+long+to+bake+sweet+potatoes+at+400 PDF link annotation
    • http://tetupamino.mywebcommunity.org/biblical_hebrew_grammar.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/4uLGqhh/wamas.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/jhj3YC1/jelekanokoreloxodibi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nijarigu.onlinewebshop.net/aluminium_cladding_for_pipe_insulation.pdfIn PDF document text
    • https://964beff5-d24f-450a-94e2-fa7e9faef44a.filesusr.com/ugd/61158f_482c8ee1db8143b681fe411051208266.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/80171222823.pdfIn PDF document text
    • https://e6676b24-921d-4f57-8fca-beda98688f3c.filesusr.com/ugd/144d27_ad2affdb73c74c4bbdb01b84fc07d2f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/munuwezurogitabuwupuk.pdfIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_2fcc6d4806e145ac92168d45cc4fece9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f3abfce-ced2-4cac-b561-74293e5585d4/ti_nspire_cx_cas_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a3b4c0-a7c4-4640-80cb-1a69866b6923/56571142598.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/pofekolujufebax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b37032-b68a-4fe7-9930-82fe592b4169/safe_haven_animal_rescue_share_lafayette_la.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/wobelotakir.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_e1a995db157f45e9bdf81a6a921e658f.pdf?index=trueIn PDF document text
    • https://35e1cc1d-5f6c-4a41-9b1b-b9ae8dddc97a.filesusr.com/ugd/351eee_51097b891b674db2afb1cbb8c4ef395c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c49b17e-8954-4b43-ad5c-d441dd6000bb/how_to_hard_reset_a_kindle_3rd_generation.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_off0000de7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7B 5380 bytes
SHA-256: fce00e39879292f3c699b81e3f2152a80e31729cdf0d3ec1128652ddde7d77ef
font_01_sfnt_off0000f0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F2 11836 bytes
SHA-256: dcfd2b8609088196fc3c272a5e79dfe61e6bf92002cd7b6de606e3033d84b728

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