Malicious PDF — malware analysis report

Static analysis result for SHA-256 17042c64ae6331a2…

MALICIOUS

PDF

111.7 KB Created: 2021-03-04 12:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0b542bf6b68b5dfec6c97132c4c1735e SHA-1: 59d151bd1d7e8534771bc4dc1bd3c83fd33371d2 SHA-256: 17042c64ae6331a27218f7524ef14c4350c2890afbbfe5cf1eccd656033e9488
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 0.9996

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://dafemum.ru/strik?utm_term=how+many+us+companies+are+iso+9001+certified PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5fd2c224b39f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485946/normal_602c562549664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_60337d433d293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380073/normal_601d29d7ad711.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366309/normal_5ffc2bfed6970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494657/normal_602383a2d5aac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_603cec5f03923.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rijowetunif.rf.gd/kiwonanepu.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/mekanawanewu.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/9108314740.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/columbia_sc_news_reporters.pdfIn PDF document text
    • http://surafupomef.epizy.com/kuluroxuno.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/52755980022.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C07 2960 bytes
SHA-256: ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b
font_01_sfnt_off0001768a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1768A 5772 bytes
SHA-256: f8857a4b56079193b90c6517f40a46f6867010857e2fe9c7238f3d4406fa03df
font_02_sfnt_off00018a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A32 11516 bytes
SHA-256: 93866c2748790701e8694cbd7c06b2f72bb754f9c810c07b9dca3304bc20098a