Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad29f09e1ec58fcc…

MALICIOUS

PDF

71.1 KB Created: 2021-01-25 09:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8ccf6f7c41cf057223a2232bc7e41af8 SHA-1: 0d79cda3e7ccc5f92af5ef1619073a8695d73482 SHA-256: ad29f09e1ec58fcc9e9ad940bc20ab14d49452c438640a48e156fd1627411ae4
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure and external links indicate a malicious intent.

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://traffnew.ru/123?utm_term=pathfinder+deadly+aim+bombs PDF link annotation
    • https://cdn.sqhk.co/xeduwukaxusa/OF4hfwc/41502980221.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuzijix/cwheAig/jezak.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/hthhbif/ripipokututupunexupijida.pdfIn PDF document text
    • http://indital.fun/funoluxulizl6xsx.pdfIn PDF document text
    • https://cdn.sqhk.co/jazepoxamib/ijjib4x/league_of_legends_wild_rift_beta_download_android.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/MeJhqgh/91597644284.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/iaLlfwp/juegos_de_miami_rex_2.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/jfghjiX/86312222818.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/ehaYAhi/xejogu.pdfIn PDF document text
    • http://bigchance.pw/ocean_speedway_orb_spyro_reignitedw4tj1.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/widiku/25201085880.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/set_text_style_bold_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/guided_audio-_visual_entrainment.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/marriage_not_dating_korean_drama.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/lessons_learned_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/70004445096.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/56294129999.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_off0000d923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD923 5392 bytes
SHA-256: ac1a02ffc1baaf17a2d7cfc904f85f8421bc1e92150672d10d69654427648840
font_01_sfnt_off0000eb52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB52 10560 bytes
SHA-256: 6aea6cdec8db66738d7cf141516b5116afa69bf6e11ba9cf080dd21d4d23de57

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