Malicious PDF — malware analysis report

Static analysis result for SHA-256 330f75e847236041…

MALICIOUS

PDF

76.3 KB Created: 2021-02-25 13:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bfd62bf3cfc6247ab2cc7fae29761715 SHA-1: 777a9cb156d7606fde77b15a57155a878d5779d8 SHA-256: 330f75e847236041afe67afe80f02fe540c94744babdf41606829615c2e4e56d
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs disguised as search results for legitimate-sounding queries, such as 'penguin dictionary of english grammar pdf'. These URLs point to disposable domains and are flagged as a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wb?keyword=penguin%20dictionary%20of%20english%20grammar%20pdf PDF link annotation
    • http://zutatowatipo.mywebcommunity.org/fire_and_ice_poem_imagery.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/kujagid.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/sims_3_super_patch_mac.pdfIn PDF document text
    • http://dinodosum.iblogger.org/definition_of_calculus.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/revitavagapiwituz.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/94626778090.pdfIn PDF document text
    • http://punejew.mygamesonline.org/84184466196.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/65755646950.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/wild_magic_tamora_pierce_audiobook.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/wisonepubozejiv.pdfIn PDF document text
    • http://zifokuwap.22web.org/zejapurofeki.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/is_the_four_agreements_a_christian_book.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/7368194190.pdfIn PDF document text
    • http://bikupiribofaz.iblogger.org/dyson_dc35_animal_instructions.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/positive_psychology_study_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://webekilijonelew.epizy.com/tr_movies_tamil.pdfIn PDF document text
    • http://rujujarorimepa.rf.gd/pozepomupovolowupunorof.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/26154074996.pdfIn PDF document text
    • http://vekifaxofezawe.epizy.com/62889660444.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/confidentiality_agreement_template_queensland.pdfIn PDF document text
    • http://mopezuvo.epizy.com/oster_bread_machine_replacement_kneading_blade.pdfIn PDF document text
    • http://goxebobepi.epizy.com/vexizinenejumu.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/the_new_howdy_doody_show_episode_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0A 5552 bytes
SHA-256: 5b7c026384f11c8c5342a3c46c3849b949d78b1ad159717f78e4585f8d7dd291
font_01_sfnt_off0000efbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBF 10476 bytes
SHA-256: 409f08d8f7d61df86b451e68b781f0255a334047217505d71cb63efed27bbbe8
font_02_sfnt_off00011381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11381 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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