Malicious PDF — malware analysis report

Static analysis result for SHA-256 362d5757815f7461…

MALICIOUS

PDF

49.4 KB Created: 2020-11-08 12:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc53a9aacba84b9c041ebdfd582556ed SHA-1: 91e6256e413b221b3d06dacc35b90ff135a2167a SHA-256: 362d5757815f746185589aebc5a726da22817b4fae224db3f64bd2803b77f1c5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and potentially malicious redirection. The document body, though partially corrupted, includes text suggesting it's a manual for an LG dishwasher, likely a lure to encourage clicks. The presence of multiple external URIs and a high ML classifier score indicate malicious intent, possibly to redirect users to a site hosting further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/123?keyword=ldf7774st+lg+dishwasher+manual PDF link annotation
    • https://gozisali.weebly.com/uploads/1/3/4/6/134670052/somudekibanunej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405190/normal_5f9946c4b182a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f91ee4046010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f97eba6e0a76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_5fa5a0576e420.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/2540998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373770/normal_5f8a2e1972d33.pdfIn PDF document text
    • https://tidivexosito.weebly.com/uploads/1/3/4/3/134316292/gumeka-kanagezitukowim-pemebuludilada-nodosubogebo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/5736014036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72fe47f-8b98-45a4-9b0b-d8fccfa70277/eminem_not_afraid_lyrics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/athenian_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a920b91-60e8-4c34-aa3f-12668e9473cf/square_word_calligraphy.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C76 5524 bytes
SHA-256: 28e4042246a7ec4d5924523a99a8e6e312739002e36e52d74ebc1fe45ef7845b
font_01_sfnt_off00007f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F31 2688 bytes
SHA-256: d8df095685b1b64bfb0b54c498939bfa173d60fa9c1fd7dcb16237aa5cae70ce
font_02_sfnt_off00008aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA3 10712 bytes
SHA-256: 84f53e1bfff11bc947ee3761be99b906f4704b851bd5072329d80171c0da71ac
font_03_sfnt_off0000af30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF30 2104 bytes
SHA-256: a814dc3c1bf03da2c920b0b81cb768422abc1436bb329e102d80af1da9a47e89

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