Malicious PDF — malware analysis report

Static analysis result for SHA-256 128101809dc927d4…

MALICIOUS

PDF

66.9 KB Created: 2020-11-09 23:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ae73a997d1a5720577c7375a933552ce SHA-1: d67ca95fe200a8f0414c83ef874f6f000bb03c53 SHA-256: 128101809dc927d493bbed011f54df3eae967fd2b539a78b3db556d3ade7a979
222 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of numerous PDF links suggests a link farm designed to obscure the final destination and potentially spread malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=ds+drastic+apk In PDF document text
    • https://nanijufofif.weebly.com/uploads/1/3/3/9/133999758/pabedoxa_lobuvifupit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f9351ea3172f.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/zurukuxidiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_5fa16a68a68dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5f9daa4f1d20d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f874051544ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369316/normal_5fa1414c571c9.pdfIn PDF document text
    • https://kololeranazi.weebly.com/uploads/1/3/4/5/134583506/f6218b76b6da94e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5f9aa604d07de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f70ab01-2d21-4975-97df-89002b5ec97a/aguamiel_fermentada_produce.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_off0000c962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC962 5096 bytes
SHA-256: 69ab9c44034562871cd62d52b88a2baa4f3e395f53b463fedc44be5a0ddcb3e9
font_01_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 11196 bytes
SHA-256: b5c1e2c4248e5fbc2a952120af812644deeae20e90f801bf977e9c14e0848433

Open this report in the interactive analyzer, or submit your own file for analysis.