Malicious PDF — malware analysis report

Static analysis result for SHA-256 037629e6a66deaaf…

MALICIOUS

PDF

84.5 KB Created: 2021-03-27 17:52:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 862d60f40fb7db91325fe69f5da23a76 SHA-1: 715b238604e1793547ef65b8dc20bab8875e394a SHA-256: 037629e6a66deaafafa9da1c3aeac8b5949a759f27035ae18b141b35f00b37d0
156 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many of which are SEO-farmed, directing users to potentially malicious websites. The primary URL, 'https://midufefew.ru/wix?keyword=time+warner+cable+tv+guide+palm+springs+california', suggests a phishing or scam attempt by impersonating a legitimate service. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/wix?keyword=time+warner+cable+tv+guide+palm+springs+california
    • https://static.s123-cdn-static.com/uploads/4483870/normal_60093fcc67e93.pdf
    • http://gufutaca3.xyz/five_love_languages_test_quizc38fl.pdf
    • https://gubukaxonular.weebly.com/uploads/1/3/5/3/135349028/c5ff03305b2.pdf
    • https://guzejanum.weebly.com/uploads/1/3/4/6/134681017/vefize.pdf
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/7160ff28c12.pdf
    • https://cdn-cms.f-static.net/uploads/4383925/normal_6048593280aae.pdf
    • https://cdn-cms.f-static.net/uploads/4479715/normal_600b5551ec883.pdf
    • https://cdn-cms.f-static.net/uploads/4415544/normal_60397556dc41f.pdf
    • https://static.s123-cdn-static.com/uploads/4468259/normal_5fe5f4f5154b2.pdf
    • http://pmaider.com/lemon_crinkle_cookies_with_lemon_frostinggcqfs.pdf
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5fef858671964.pdf
    • https://static.s123-cdn-static.com/uploads/4367923/normal_60028a1a0e9d9.pdf
    • http://flowerport.store/gejadatewaw692yk.pdf
    • https://cdn-cms.f-static.net/uploads/4487897/normal_5fe90018ee4a8.pdf
    • https://static.s123-cdn-static.com/uploads/4454420/normal_5fce7abedf2ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://aefbb2f1-1cfc-4a48-aab2-d72547d84173.filesusr.com/ugd/2f3ac6_b9dccb07242942aba3bac5979e7bd38f.pdf?index=true
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_a63a4cb1927741b78bb5b8d8d9e4543e.pdf?index=true
    • https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_bb7c773b13c34e499711113988ad7fc8.pdf?index=true
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_6ae7e830df39497891387cf88aab03a1.pdf?index=true
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_8a13fe34f4994832b843ba9fb5faa9e7.pdf?index=true
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_c87538fd73bc47c7b05acff327e4f9a3.pdf?index=true
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_af73c9de476d4f12a7af568905c96175.pdf?index=true
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_e2c59d09adc44b2ca3465df07c79f331.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcda.bin
b9d0ea6ecd91514b40bdef97f73cf64fd87ccb0b5e75e125453e91390390dd54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDA 5600 bytes
font_01_sfnt_off00010fce.bin
d79d87735c83386a5d7a04aa71e7f81632b0e318a715e952ee2e367b83c44cf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCE 11244 bytes
font_02_sfnt_off000135c5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135C5 4324 bytes

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