Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09223a6c31a2fbc…

MALICIOUS

PDF

81.5 KB Created: 2021-04-26 13:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 97b9920bca2d525903ee6363e048fa92 SHA-1: 9d54d5b42b78da14457b51856c90c00fae6fdfe0 SHA-256: a09223a6c31a2fbc2c187778c22f01af6b8ca8dff68b56bdb8ce7ee08175ec71
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant heuristic firing indicating a 'PDF link farm'. One of the primary external links, 'https://botokaw.ru/strik?utm_term=what+is+the+horizontal+force+on+the+skater', is directly associated with a heuristic indicating a potential phishing or malicious lure. The ClamAV detection and ML classifier further support the malicious nature of the file, suggesting it is a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://botokaw.ru/strik?utm_term=what+is+the+horizontal+force+on+the+skater PDF link annotation
    • https://vabijerokajesi.weebly.com/uploads/1/3/4/5/134595953/b0a23c3ef.pdfIn PDF document text
    • http://difanitukovu.mywebcommunity.org/pisozuxavekokupugogoxog.pdfIn PDF document text
    • http://sukutoxuwurif.mywebcommunity.org/xubafatimi.pdfIn PDF document text
    • https://cdn.sqhk.co/jusitufugaf/j2ifp6I/faromopubewupobazinoj.pdfIn PDF document text
    • https://lutaxabivuk.weebly.com/uploads/1/3/0/7/130740512/4124229.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/aiaugje/thrifty_car_rental.pdfIn PDF document text
    • https://niwarixetawozav.weebly.com/uploads/1/3/4/1/134108921/debevez.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/carbono_neutral_costa_rica.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/cuUcbe1/4329471532.pdfIn PDF document text
    • https://gegixigozazewit.weebly.com/uploads/1/3/4/8/134858275/417427ddd0.pdfIn PDF document text
    • http://doruguduku.iblogger.org/23827237357.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/rhaRnGC/woraru.pdfIn PDF document text
    • http://xibevajisigidig.22web.org/stihl_ts420_instructions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavalukato/45968974534.pdfIn PDF document text
    • http://xenexafa.myartsonline.com/the_pioneers_of_african_literature_in_european_languages.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/wufiwixonatiwipab.pdfIn PDF document text
    • http://pikaderobiw.atwebpages.com/losufa.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/toto_hold_the_line_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/kajitazafaripilipolile.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/12808530114.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/la_tipologa_de_los_derechos_humanos_por_generaciones._los_derechos_suelen_clasificarse_en.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/devefizapulowanesatobuz.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_off0000fe69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE69 5096 bytes
SHA-256: d559c0f3f5234d1486a5c7e8b19c659e39dbd22cd2adc60bff97f8f78d177928
font_01_sfnt_off00010fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD1 11928 bytes
SHA-256: 0bbd9f0fd8234bcb59f8d1f64aef9a7291d6da831196da008eeb0a753ca8a7d2

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