Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7cda7e96a6d4b26…

MALICIOUS

PDF

72.1 KB Created: 2020-12-11 15:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 997a6189cff37998dbbb57b23fe0b652 SHA-1: 5db9c4735320638ac43a6141e627848197049591 SHA-256: e7cda7e96a6d4b26527ac85e482897db7293857256a0dc576d2d78b30beb17ee
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The ML classifier and ClamAV detection strongly support a malicious classification. Although no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://cctraff.ru/strik?utm_term=how+to+date+a+magical+girl In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bisazabe/bksblive_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89f40923-0ee3-4d38-af87-ede105566a29/67904145121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37b474f9-2db4-4769-a106-e8ab4dca58a1/87590321301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ee7c0e-f9d9-4846-9fbc-7e6bde5eaea5/vukasedirarib.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/lomalotazosovofo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e93ce5c7695ca99badce/t/5fcf6dae14319a51dc31ef86/1607429551910/helicopter_2k20_park.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e1a4a1-4411-4283-9624-f4227c872e09/the_new_business_road_test_5th_edition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc3525e7acac6192a2ac3af/1606636126717/can_mobs_spawn_on_glass.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/9231305288.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/49063609599.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_off0000de70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE70 5136 bytes
SHA-256: e75bac369d57b643c161b798d3996e36d41beea7e723fe137e1c5cf5916cef1c
font_01_sfnt_off0000efe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE0 10764 bytes
SHA-256: 76ab745e014362d0bca2c346684c89a4984b4a497e2f23b64f180a5c3162a220