Malicious PDF — malware analysis report

Static analysis result for SHA-256 970f1ded90ab17dd…

MALICIOUS

PDF

70.6 KB Created: 2021-03-04 11:21:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 47dbbfc21f7d0e1ce5d32a11d456cc85 SHA-1: 54c2683208b9ddccb345810de32ae72483d7e2bc SHA-256: 970f1ded90ab17ddba70a816ff5a9750de802bccf6a53bb05649388850833133
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_SEO_LINK_FARM' heuristic. One of these links, 'https://ponafet.ru/wix?keyword=blessed+sacrament+school+staten+island+reviews', is directly embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the nature of the link farm suggests a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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://ponafet.ru/wix?keyword=blessed+sacrament+school+staten+island+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383687/normal_6017f691abe5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450048/normal_6023d34f12923.pdfIn PDF document text
    • http://gigewaxupupixe.22web.org/8542587107.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/5e45bdd2e6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412408/normal_5fe268923bfe3.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/podawakumepewez/westpac_business_online_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/how_big_is_40_by_30_cm.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/hallmark_cards_australia_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/58778274850.pdfIn PDF document text
    • http://gazezubutajon.rf.gd/59100203066.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/rascal_ranch_performance_horses.pdfIn PDF document text
    • http://vepuguda.rf.gd/blitzball_guide_ffx-_2.pdfIn PDF document text
    • http://gadoxijumulop.epizy.com/nopunatotuz.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/lutegifojapamifotopibune.pdfIn PDF document text
    • http://nesosizi.rf.gd/how_to_find_molar_mass_of_a_gas_given_density.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_off0000d819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD819 5380 bytes
SHA-256: 5636b6f267f9841aa076dd7c6acb72b11298099d26c643f0ebb2275a4c12056f
font_01_sfnt_off0000ea47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA47 10184 bytes
SHA-256: a3d3b3fc33708234cf06dde4ae99bb951ec5ef6ed13fc40dbbfa98923615e060

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