Malicious PDF — malware analysis report

Static analysis result for SHA-256 be366195e7b2fdba…

MALICIOUS

PDF

80.6 KB Created: 2021-04-06 07:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5374c37e070e799400df2b5e20e7a739 SHA-1: 98169eb46719e9c13d5a02cd1876ee9f9301318b SHA-256: be366195e7b2fdba4031d75e673ed615031748d9f11e29dd399e3290a5553314
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and numerous external URLs point towards a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=lamborghini+gallardo+price+second+hand
    • https://cdn.sqhk.co/dijabidasu/LzYbAhf/free_samsung_unlock_code_calculator_online.pdf
    • https://cdn.sqhk.co/jivazufevi/Fjehfa2/dusuxusopetovo.pdf
    • https://gijejutet.weebly.com/uploads/1/3/5/9/135974865/gaduzusil.pdf
    • https://wuxinaruniluxod.weebly.com/uploads/1/3/4/8/134882591/4459561.pdf
    • https://cdn.sqhk.co/geruvijiwiw/CVhcRHB/bwf_score_sheet.pdf
    • https://bufigolumixi.weebly.com/uploads/1/3/4/2/134234787/zirawim.pdf
    • https://cdn.sqhk.co/vijamabaf/icqicGS/movie_night_gift_basket_uk.pdf
    • https://mesopivupezuna.weebly.com/uploads/1/3/5/3/135311967/getoza-tunugedurefu-loradoleguxusaw-vutadeli.pdf
    • https://lukuxafibufogi.weebly.com/uploads/1/3/5/4/135400428/ae03efd.pdf
    • https://cdn.sqhk.co/rarukaboz/cWNirui/barbershop_inc._poki.pdf
    • https://cdn.sqhk.co/zadoweferoxe/ghaghii/snapseed_editing_background_photos.pdf
    • https://baxodibidixajit.weebly.com/uploads/1/3/5/3/135311382/5113248.pdf
    • https://wozomeki.weebly.com/uploads/1/3/0/7/130776066/f1469db2.pdf
    • https://cdn.sqhk.co/lisutovudaf/gjkighe/vapefosojolaretowo.pdf
    • http://rezokivi.medianewsonline.com/meningoencephalitis_tuberculosis.pdf
    • http://kazaxukiga.getenjoyment.net/xuvokamalufevufafexa.pdf
    • https://cdn.sqhk.co/duzoxibuf/6gjbnTe/krita_stabilizer_2020.pdf
    • https://vinosubolab.weebly.com/uploads/1/3/5/3/135316207/ditokubax.pdf
    • http://kuriwuvoke.22web.org/modern_methods_of_teaching_english_language.pdf
    • http://segaruzobuguses.scienceontheweb.net/wibujunake.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://duziroro.myartsonline.com/bemba_to_english_word_translation.pdf
    • http://jarunotaso.rf.gd/cartoon_character_maker_free.pdf
    • http://rukateridexak.rf.gd/autocad_2014_floor_plan_tutorial.pdf
    • http://bugelinuxobeva.epizy.com/cub_scout_bowling_pins_bandcamp.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ac.bin
a1ca820f806de75919661cf5650d31095f87b71a80862b4550c629ea0a4013a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AC 5568 bytes
font_01_sfnt_off0000f96a.bin
e97806e393556388bd894c818fdf427aa8f5d5a5a63ee600c047545c935599fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF96A 11120 bytes
font_02_sfnt_off00011f7c.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7C 16164 bytes

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