Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14332c58945ec69…

MALICIOUS

PDF

66.7 KB Created: 2020-11-18 16:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6396e8874742d768deaad10c11ef2412 SHA-1: 15b9ed56c7b90361e6b37dabe36aa7d1becaed5c SHA-256: f14332c58945ec69a5c92b59cf582fd195ff9b03c754c379b54815e5ab372f69
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=chrome+aw+snap+out+of+memory In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404738/normal_5f9ea2083465c.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/809d4df9e40c.pdfIn PDF document text
    • https://tiritezolodimim.weebly.com/uploads/1/3/4/7/134743729/8ea49ac5d1a7.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/2716509.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/gajejasa/account_live_acsr_uaid.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/badutogovukebisudugudige.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/avon_catalogue_septembre_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a51ab722-e2ae-49d3-9a6c-4de330aa735e/zijidodejopowokusesubu.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/condensed_electron_configuration_of_bromine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314a9b9f-a86d-49e3-8a72-378bb5973714/devibekovunexel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb253867-0c42-492c-b1eb-aec210e89ee7/26424260045.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/sejonewatexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ad81a30-2172-4d15-ad4f-ad22b167ad28/23296899118.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_off0000c860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC860 5208 bytes
SHA-256: 819f0e094121996f6eb7fb9ac12e7f00fed9d2be139a33fdcfa0cd027f30caa5
font_01_sfnt_off0000d9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FD 10668 bytes
SHA-256: 9194a479c8328bec3ed8326bea8f064fa2419c3e3958e3b61f8897bb53cbc561