Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ed577d6e0ae4aa…

MALICIOUS

PDF

82.8 KB Created: 2021-04-30 06:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0fbb98575bd4cde004e703f9d4965583 SHA-1: a837baaa5e6c9c9c9c875bb7acce62f0d07f6fab SHA-256: 03ed577d6e0ae4aaaeee87601aa8b8ee3c71673102bf9f7eb7b74758c7ab2768
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs point towards techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://fokemale.ru/strik?utm_term=david+deangelo+attraction+pdf PDF link annotation
    • https://cdn.sqhk.co/porosobof/jedOgeT/uber_driver_in_dallas_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/tigufarejeti/fhavghd/87457809686.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/tghBiff/pazudetokaraxiv.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/jiE9ick/todo_cuenta_dld_letra.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerefe/ggWgfsP/bikawaxuwi.pdfIn PDF document text
    • https://subogepaweb.weebly.com/uploads/1/3/2/3/132302814/vajireja-wulazumolijovi-maxide-zuziv.pdfIn PDF document text
    • https://cdn.sqhk.co/mugodetutag/gjeWhgo/virunepibodotuwaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/hdB7ijl/49774932813.pdfIn PDF document text
    • https://cdn.sqhk.co/defegitip/diayiih/fiduvofova.pdfIn PDF document text
    • https://napuraviseso.weebly.com/uploads/1/3/4/3/134322211/8229549.pdfIn PDF document text
    • http://zasufigonibat.getenjoyment.net/calculus_early_transcendentals_7e_solutions.pdfIn PDF document text
    • http://jomikifu.medianewsonline.com/faxotazilutivesow.pdfIn PDF document text
    • https://mivunibetokujix.weebly.com/uploads/1/3/1/8/131856995/vadezakagulux.pdfIn PDF document text
    • http://tikanaw.mypressonline.com/shakespeare_beaucoup_de_bruit_pour_rien.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/what_are_some_common_latin_phrases.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/balance_of_payments_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pitigapevede.onlinewebshop.net/60155677051.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/visiting_card_psd_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/driver_booster_pc_full_crack.pdfIn PDF document text
    • http://kavuduvolilazod.myartsonline.com/96409617920.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/the_art_of_the_deal_book_summary.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_off0001074e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074E 5204 bytes
SHA-256: 67dd5a9e7cd8580a5b4e56d5c84ade951453edb93bfbcc825610c5484bfff7f8
font_01_sfnt_off00011926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11926 10708 bytes
SHA-256: 8f9d67a11a39741ea986f30d5d493bc6025a62b16a2808e2f44194de335747b0

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