Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a46f979436a5ea…

MALICIOUS

PDF

118.9 KB Created: 2021-01-18 00:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 510e8f787300b7d7c1f823783f092e4b SHA-1: 7c3cdf24999919286fc7fb5a57302f9d56e9f86a SHA-256: c2a46f979436a5eadfc9c93d54da112e7eb19fae2e3e451fa536ca828e1338bc
126 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous external URIs, many pointing to disposable hosting and link farms, strongly suggests a phishing or malware distribution attempt. The ML classifier also indicated a high probability of maliciousness. No scripts were extracted, but the document's structure and embedded URLs are indicative of a malicious intent to redirect users to harmful sites.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffe.ru/123?utm_term=eva+foam+sheets+for+tool+boxes PDF link annotation
    • https://site-1176453.mozfiles.com/files/1176453/pixel_q_icon_pack_apkpure.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/vivubopivufunexan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_5fdb8e0d39b9d.pdfIn PDF document text
    • https://site-1173833.mozfiles.com/files/1173833/hero_honda_cbz_xtreme_bike_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406168/normal_5f9e003e0f61f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_5fd0dc53a2cdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5fc8a256a64b3.pdfIn PDF document text
    • https://site-1084296.mozfiles.com/files/1084296/fekurapobikarusazavisog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490366/normal_5fcb35e00bf43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f9132878a9ed.pdfIn PDF document text
    • https://site-1197512.mozfiles.com/files/1197512/7233402137.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5fd3dac15b2d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369505/normal_5fdd8984204e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fobapisarut.epizy.com/avanza_g_2005_manual.pdfIn PDF document text
    • http://zetesapoxus.epizy.com/96230422758.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/lomuzidorinugitavijedap.pdfIn PDF document text
    • http://worizekadi.epizy.com/3305949377.pdfIn PDF document text
    • http://xazitew.epizy.com/bajanewenenumit.pdfIn PDF document text
    • http://nexofemexer.epizy.com/wiralabila.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_off0001977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1977F 5232 bytes
SHA-256: 777f78c15a83fb836324fe878ba9630d9f5dc6885b4ee8f084f0fec84bea9f19
font_01_sfnt_off0001a931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A931 10684 bytes
SHA-256: ccb32113ccc4311b7944757c2faa138bb3fbb412b9e755dae194b33245846e17

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