Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26fb1cc7e1c021e…

MALICIOUS

PDF

108.1 KB Created: 2021-03-21 23:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 882d355c56d8648bd1bba79d7c094e2f SHA-1: 9f28c7c70688e346da3df0c00fca6a86e2edd02f SHA-256: f26fb1cc7e1c021e522bc9e2fa1eb2bd5d42de48fe9a6fda0fea8c996f2ab5cd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, including a prominent one to 'maypoin.ru', suggesting a phishing or link-farming attempt. ClamAV and ML classifiers identified this PDF as malicious, specifically a phishing trojan. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate the document's primary purpose is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/award?keyword=two+dimensional+shapes+and+their+properties+pdf PDF link annotation
    • http://tujubiluwanodof.22web.org/inverse_functions_worksheet_1.pdfIn PDF document text
    • http://wusozupu.mypressonline.com/paracetamol_poisoning_treatment.pdfIn PDF document text
    • http://boderuj.iblogger.org/69351778887.pdfIn PDF document text
    • http://nubatevujonuw.mygamesonline.org/betrayal_at_house_on_the_hill_what_happens_when_you_die.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://danokob.epizy.com/xegitagunujimasusuxoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fc750d-e5ba-46bc-b13a-356d624a4f16/do_only_double_dapple_dachshunds_have_blue_eyes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1686746-45fd-41f3-8127-002283b28aa3/lifuzefifodoxumidasi.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/datodeviwariniredixofol.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/what_are_the_first_4_yoga_sutras.pdfIn PDF document text
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_4818e3d5bff54ffab09eecb82c96a716.pdf?index=trueIn PDF document text
    • http://genuziga.epizy.com/accidentally_in_love_korean_drama.pdfIn PDF document text
    • https://2b12d24f-0c9a-4a32-b427-430aba395f0c.filesusr.com/ugd/6cfe90_1f331000cf2144f2bf92740e28d61bff.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/42566571190.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/ethoxylation_process.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/cyberpunk_2077_ps4_patch_1.06_deutsch.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/bottle_feeding_advantages_and_disadvantages.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/kerala_backwaters_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/avast_license_file_free_2038.pdfIn PDF document text
    • http://dozonox.epizy.com/fundsmith_equity_fund_i_class_accumulation_factsheet.pdfIn PDF document text
    • https://2e21b658-2967-4279-8f18-a03590b678a5.filesusr.com/ugd/f5e1b2_85a881abc84346fcbee98d31188c96cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/functional_requirements_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/valvoline_maxlife_application_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/38666009121.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/58087396201.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_off000168f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168F9 5324 bytes
SHA-256: 3b35685d9345740fcaec92d863fa9259a39dca5a40ff29f0df718b58cb399ef1
font_01_sfnt_off00017af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AF3 11608 bytes
SHA-256: a2872f040e177c4122b15302d717320bb156b9e8b168f5eed52b5019f7327e11

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