Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4cd4f5089005b7…

MALICIOUS

PDF

200.1 KB Created: 2021-03-15 12:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d6f46130d12751cd157b22b2c106a651 SHA-1: bb978affa7346e072fa93b0e32983cefbbe7544a SHA-256: 7d4cd4f5089005b7241e2e69e740a05da07a6c5c06f7315fcdd4df4f9a7b8ea1
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URLs, such as 'https://xezojetit.ru/strik?utm_term=brother+xl2600i+bobbin', are indicative of a phishing campaign aiming to trick users into downloading further malware or submitting sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/strik?utm_term=brother+xl2600i+bobbin PDF link annotation
    • http://zebrait.fun/pomowekelatukowusowuzugakaxmc.pdfIn PDF document text
    • https://tovakuroxi.weebly.com/uploads/1/3/1/1/131164121/tameluwulifenuvu.pdfIn PDF document text
    • https://xevuradapo.weebly.com/uploads/1/3/3/9/133986258/398a3098ee54eb.pdfIn PDF document text
    • https://tedotedonux.weebly.com/uploads/1/3/0/7/130775879/1dc2f947.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/1353410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_6039102710afd.pdfIn PDF document text
    • https://terigemi.weebly.com/uploads/1/3/1/8/131856376/3554773.pdfIn PDF document text
    • https://wovugozota.weebly.com/uploads/1/3/2/6/132695813/cf1ac3fa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447884/normal_60198fb2cd588.pdfIn PDF document text
    • https://nazoxuja.weebly.com/uploads/1/3/2/8/132814973/jimagigi.pdfIn PDF document text
    • http://prodit.space/wopokomovikaluwodaxirp5lg.pdfIn PDF document text
    • https://bavifevip.weebly.com/uploads/1/3/6/0/136049805/3233190.pdfIn PDF document text
    • http://prizinsta.site/pioneer_sx_780_receiver_for_salei6teu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481069/normal_6037f7d54fe7b.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/garorowa/zuwalopuxaduput.pdfIn PDF document text
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_a6571b2d388c443e940ad23aabc5ff03.pdf?index=trueIn PDF document text
    • https://8aefc570-8454-48c3-bb63-d4d1067b7ce0.filesusr.com/ugd/5c9621_90c92e38ccf84dfe9ce416545d8ed917.pdf?index=trueIn PDF document text
    • https://5a4e7950-e122-4b3c-9cf7-894e7f5b1216.filesusr.com/ugd/76aeb6_2277be23708945c98e02cb221b0361dc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genedesowul/fesutezu.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/fidic_gold_book_contract_guide.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_off0002db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB59 5072 bytes
SHA-256: 7a450cc211a3205d4ef4c64b456c391bd8fb44b501760331b86852aa58df58e1
font_01_sfnt_off0002ec9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC9E 10984 bytes
SHA-256: 50e685823429235fc98ecb6a5384260db81bd820bbfb504795e37c91e9781c0b

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