Malicious PDF — malware analysis report

Static analysis result for SHA-256 432d1649c7bce48c…

MALICIOUS

PDF

89.0 KB Created: 2021-05-22 21:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b3247284ca4d6010cc979eabda0b9a61 SHA-1: 5b7e7981cce7c9f20cfb744a88d0de7bd94daf94 SHA-256: 432d1649c7bce48ce76dad2f55ba82ad0add62108cc3ad981f211a4fc0076753
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing. The document body, though heavily corrupted, contains text suggesting a movie lure, which is likely a pretext to drive users to malicious sites. The presence of PDF_SEO_LINK_FARM and PDF_URI heuristics, along with ClamAV detection as Pdf.Phishing.Trojan, strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://gimoguvi.ru/strik?utm_term=reto+de+valientes+pelicula+completa+en+espa%25C3%25B1ol+latino+pelisplus PDF link annotation
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/jisejis.pdfIn PDF document text
    • https://kefagifugujog.weebly.com/uploads/1/3/0/8/130813645/jewulato-diwoxizogutap-bowuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424009/normal_60020118f1a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392441/normal_601aec078f5c8.pdfIn PDF document text
    • https://wiwetone.weebly.com/uploads/1/3/4/6/134660192/3113277.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460231/normal_6008f07036ffa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393641/normal_5ff2319811c71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413122/normal_5fe3666184381.pdfIn PDF document text
    • https://dabikosetizoje.weebly.com/uploads/1/3/4/2/134234987/4187582.pdfIn PDF document text
    • https://tidosivapozagul.weebly.com/uploads/1/3/4/3/134390518/buxisuvuv_wimumikib_xapezamagenumab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490252/normal_5fce14d597689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373753/normal_6033cda0219bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475406/normal_6031bddf2240d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414687/normal_5ff6834b2de30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365642/normal_5ffd6091bfb17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_603a77b3a8667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469623/normal_602b4d376bfd0.pdfIn PDF document text
    • https://wepizowo.weebly.com/uploads/1/3/0/8/130813330/tafozulinarezi_razagawafame.pdfIn PDF document text
    • https://tadududire.weebly.com/uploads/1/3/4/6/134687045/737212.pdfIn PDF document text
    • https://gosibipidumoduj.weebly.com/uploads/1/3/4/3/134318513/pimonoliforejux-xegivir-sunoxijun-nakogogigeri.pdfIn PDF document text
    • https://wuguruxozoza.weebly.com/uploads/1/3/4/0/134040539/49501.pdfIn PDF document text
    • https://mokekisinuru.weebly.com/uploads/1/3/4/3/134366850/c1620.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/a6838953-ccd2-41a1-ad29-54bdc6a9ca9a/evinrude_etec_150_300_hour_service_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c7e335-4c57-4a2e-8be2-aaf4c86c63f3/28594244065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504beac5-7190-48e9-a6d4-cca8f01981aa/1973104727.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA78 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 5400 bytes
SHA-256: 0de7223dbd60f831cd219100091b86cc42e6304d5aa414cec6fc9d12a28d69b5
font_02_sfnt_off00010d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6F 1932 bytes
SHA-256: 79146b382a30d57b86cd31aee382fdde8e94a7721889692ffed962feefcb06eb
font_03_sfnt_off000116b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B4 11724 bytes
SHA-256: 5a126010f1a2dfd43bc19a0ceae2a7ec93b040faa08f0e1621e2253f4749d5bf
font_04_sfnt_off00013d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D26 16076 bytes
SHA-256: 12198ed304d8e74df64bcaa8a4aae6da6436d73ceeb6d758e01031f89a18fcfe

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