Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b8666261311b57d…

MALICIOUS

PDF

92.8 KB Created: 2021-03-27 22:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ebae0631bc7cb3122729e1f020abd4d3 SHA-1: 2391b3918de3608ac6299b730cf8e8208266b299 SHA-256: 6b8666261311b57d636609a4b8110eceb1b362c4f8815412a168bf871dbdb979
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded links, many pointing to disposable domains, suggesting a link farm or redirection scheme to distribute malicious content. The document body, though heavily obfuscated, references 'Skyrim se load order example', likely a lure to attract users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=skyrim+se+load+order+example PDF link annotation
    • http://wedurorokim.mypressonline.com/gapovidudewedawasekinazo.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/gikebisuvimoju.pdfIn PDF document text
    • http://votixowet.22web.org/5919330675.pdfIn PDF document text
    • http://nivakagudan.22web.org/87937863989.pdfIn PDF document text
    • http://rotiwopofeze.mywebcommunity.org/pofarujogerugujalo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipizaz.rf.gd/introduction_to_financial_accounting_coursera_answers.pdfIn PDF document text
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_b3485b690b4f427ebc6422a6822e28bf.pdf?index=trueIn PDF document text
    • http://satovimowenijor.myartsonline.com/esquizofrenia_paranoide_definicion.pdfIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_50d7a7048e744c668168ac22883ef652.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef07a7b-7bca-4183-af3a-4198a2e7ab12/21767763602.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_8c9a044173ab433880a99156427450bf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/047f3766-eb82-4092-9c37-e11ca3a3d3d2/favafidisiwanukefazo.pdfIn PDF document text
    • http://nadiripu.epizy.com/63057026814.pdfIn PDF document text
    • https://c5c1e25b-3ca9-4f8f-aecb-0ee3b29cb37b.filesusr.com/ugd/f4fe7b_cf4eefb3aef34511a8c0fca5534d114b.pdf?index=trueIn PDF document text
    • http://talizojewebovob.rf.gd/what_if_polar_bears_go_extinct.pdfIn PDF document text
    • http://jebefufodapiwi.epizy.com/box_tops_for_education_summer_collection_sheets.pdfIn PDF document text
    • http://pewetijugezam.rf.gd/ubiquiti_uap_ac_lite_user_guide.pdfIn PDF document text
    • http://roxegut.rf.gd/6_month_tough_mudder_training_program.pdfIn PDF document text
    • http://kazaxese.epizy.com/atlas_copco_vt4_compressor_manual.pdfIn PDF document text
    • http://gebusibe.rf.gd/business_progress_report.pdfIn PDF document text
    • http://gototura.myartsonline.com/xagirajeteduguv.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_off00012c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C28 5444 bytes
SHA-256: 957b829f1bc28c1879300f8de119b5e39e569571ab8d7c6f30863b9f8637f05e
font_01_sfnt_off00013e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E9F 11576 bytes
SHA-256: 58c56ad8d4ea421cc6b8c4cec8ad4b89b34fb893d8c070fc38a9ff8306b1f276

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