Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f63212829a930f…

MALICIOUS

PDF

69.8 KB Created: 2021-01-14 11:27:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 08ee088a5e44d32258d367919fad8f26 SHA-1: eee0cd4ac6304eaa04979c5e884dc5f449d780cc SHA-256: 20f63212829a930f3624705be14e8812047bd430d40188570dca66f2a7af7ae1
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF link farm. One of the primary links directs to a URL containing 'game hacker apk download no root', suggesting a lure for potentially unwanted or malicious software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafficel.ru/123?utm_term=game+hacker+apk+download+no+root PDF link annotation
    • https://mojavopadagesit.weebly.com/uploads/1/3/5/3/135383036/sunokuvotulu.pdfIn PDF document text
    • https://cdn.sqhk.co/gogoturowib/sjj6gdP/54958793981.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/fjee8PV/31294704195.pdfIn PDF document text
    • https://site-1178961.mozfiles.com/files/1178961/motu_patlu_ke_cartoon_mp4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5febdb8627bba.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/newopetusam/janes_all_the_worlds_aircraft_1913.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/avision_ad125.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/sofazajipapiju.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/majipupagivesizomujakexat.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_off0000d548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD548 5324 bytes
SHA-256: 5c861304f87ff29f8a9e5d18fff38dbea52e7046508cf1d11839fe68646ba8b6
font_01_sfnt_off0000e74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74D 10484 bytes
SHA-256: e777daa576e5c49177ba1fc9e87e600def4b50b746e11d84258e888d6762bf0e