Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72acaf5af3468fb…

MALICIOUS

PDF

68.7 KB Created: 2021-03-01 11:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f636dec1c1e5f37b9cc859ca05348f87 SHA-1: 216dcc4988f7952743406658b53422d9089f55fd SHA-256: f72acaf5af3468fbbd4fd5c7030cdcf2ef1885071a8d28016b3067e30182bb8a
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://golowaki.ru/123?utm_term=how+to+train+your+dragon+homecoming+stream+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409394/normal_600e7dbdd1226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412908/normal_5ff254e53dff7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389084/normal_602f595524a39.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/pojukeba_nusonufepuge_xubugod_fetutopilerifog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fc9bcebde740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370996/normal_603bd0117ce7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416810/normal_5fe7677056f30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_601e677600181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500186/normal_601e428263880.pdfIn PDF document text
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/renakobinizujukasa.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/tafogusegabomu/14874401469.pdfIn PDF document text
    • http://lewafozilit.epizy.com/wamategumugut.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/36665340419.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/practically_speaking_free.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_off0000cda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA4 5508 bytes
SHA-256: 08dbd7258bd50c3c09f8c33c198b1717acf96bb774eeeadce562f89b360e8a69
font_01_sfnt_off0000e04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04A 10888 bytes
SHA-256: 82dcfd18c93206eaec8aac2047671103b47a70dcedba546d87b805df9be464cc