Malicious PDF — malware analysis report

Static analysis result for SHA-256 f070fdd8d357cd2b…

MALICIOUS

PDF

80.5 KB Created: 2021-04-10 03:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a07e44ab99a9968cc9b1e92965b89db SHA-1: 5e1c14e3800462c0240ce75fa6705777170a05e3 SHA-256: f070fdd8d357cd2b86835dbd05280254b03f3662f6e4bd653c2430b56cd8582f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. The presence of embedded URLs and the overall structure indicate an attempt to direct users to potentially harmful content, possibly for 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://jumiwimov.ru/strik?utm_term=mythic+odysseys+of+theros+god+weapons
    • https://rarifipive.weebly.com/uploads/1/3/4/1/134131304/ropakikinogasoj.pdf
    • https://static.s123-cdn-static.com/uploads/4366035/normal_5ffacaac95ab8.pdf
    • https://cdn-cms.f-static.net/uploads/4449004/normal_603202041b327.pdf
    • https://sinezotuze.weebly.com/uploads/1/3/0/9/130969777/pezafuve.pdf
    • https://kesozelakix.weebly.com/uploads/1/3/5/3/135300748/jifak.pdf
    • http://jeruxawi.iblogger.org/anonytun_pro_apk_2017.pdf
    • https://xesirizibolaz.weebly.com/uploads/1/3/4/4/134432563/soroguziza.pdf
    • https://xenesadu.weebly.com/uploads/1/3/0/7/130739949/mowavubaka.pdf
    • https://cdn-cms.f-static.net/uploads/4452374/normal_60544302b29fa.pdf
    • https://cdn-cms.f-static.net/uploads/4403271/normal_6069255009c0e.pdf
    • https://dinabowufijub.weebly.com/uploads/1/3/4/7/134751612/wotivosozululudo.pdf
    • https://sifapovidajep.weebly.com/uploads/1/3/0/7/130738911/68792.pdf
    • https://static.s123-cdn-static.com/uploads/4476595/normal_5fe1187ac4f0c.pdf
    • https://janexixowaju.weebly.com/uploads/1/3/4/3/134311399/bdb26552667.pdf
    • http://tamowigaxijatot.66ghz.com/59342886009.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/julaxel/99729851935.pdf
    • https://s3.amazonaws.com/bopuxosavubare/how_to_program_a_radio_shack_scanner_pro_2015.pdf
    • https://f421159b-d329-41e8-bc42-072bc93e4c50.filesusr.com/ugd/65d6f7_efaeab3ded5e4fdf83d428b8f4d725a7.pdf?index=true
    • http://tujukiji.rf.gd/legovizololewebonosefakun.pdf
    • https://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_2eb4738f1687463abd4d5c5e176e8669.pdf?index=true
    • https://s3.amazonaws.com/farefasejikap/mupuxavesewavadib.pdf
    • http://topemuzopapegu.epizy.com/icse_full_form_meaning.pdf
    • http://sofikej.rf.gd/3312487403.pdf
    • https://s3.amazonaws.com/zetituri/how_many_calories_in_a_wendys_single_hamburger.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f923.bin
0f8c9da767700402b4b0cfa09e4cd7ae65cd7530a522763289f3bcdf09247111		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF923 5584 bytes
font_01_sfnt_off00010c44.bin
eee1732ad6aa66fd4ae0b9a086d025e8858fcc39c9269b184b506fc3059d5783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C44 11108 bytes

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