Malicious PDF — malware analysis report

Static analysis result for SHA-256 2459d0ce82af4050…

MALICIOUS

PDF

71.7 KB Created: 2021-02-21 22:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c2200313122e258304d7e2654ea03254 SHA-1: 6755b2f4c51a952a24c3d5bd731e665aa2c9a5fb SHA-256: 2459d0ce82af4050c89b77dad9b25914288761dc9a811ef30e909ebd91439795
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a common tactic for SEO spam or phishing. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a large number of external links within the document. The ClamAV detection and ML classifier further support its malicious nature, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=how+to+fix+leaky+faucet+handle PDF link annotation
    • https://fomemavinujidi.weebly.com/uploads/1/3/1/4/131414297/6dc3a.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/rWgfhdx/katuwugelujuxixupabadi.pdfIn PDF document text
    • https://botoriki.weebly.com/uploads/1/3/2/6/132682976/63e688454c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5ffcce7797254.pdfIn PDF document text
    • https://sufidubiziden.weebly.com/uploads/1/3/4/7/134732268/7972b9.pdfIn PDF document text
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/2620722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_600ef1a445c19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzulipanaro.epizy.com/chroma_key_sample_video.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/6524535148.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/lagu_air_supply_goodbye_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/vufasifixowotenud.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/19441451767.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_off0000ddb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB3 5124 bytes
SHA-256: 702be663ec209b9702c1342594f7e681279ccc8c8fbf33f94fa877aa6442f491
font_01_sfnt_off0000ef3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3B 10268 bytes
SHA-256: 162fe6754d28de1db27054bcdd4ff47d7cc9631d53cfba82183d6986673c54aa

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