Malicious PDF — malware analysis report

Static analysis result for SHA-256 deca2911f62a3934…

MALICIOUS

PDF

70.4 KB Created: 2021-03-13 13:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3010ad22811a46715ace6bcfa8f4b2c8 SHA-1: abaaa7103ba91feef505d24efed6b3452a38c051 SHA-256: deca2911f62a39345c51b9a2a61bf25e57e211f3de55e9bc4d8cf1fef9d8bbee
186 Risk Score

Malware Insights

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

The file is a PDF that impersonates Netflix to phish for credentials, as indicated by the 'SE_BRAND_CREDENTIAL_PHISH' heuristic. It contains numerous embedded URLs, many of which point to disposable hosting or redirectors, suggesting a link farm designed to funnel victims to the phishing site. The ML classifier and ClamAV detection further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/zoninuxinujuza_wimatefu_sekotaxolud.pdf.
  • 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://lozipotod.ru/award?keyword=chhattisgarh+map+pdf+blank PDF link annotation
    • https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/zoninuxinujuza_wimatefu_sekotaxolud.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/option_volatility_trading_strategies.pdfIn PDF document text
    • http://panedapupugaxe.22web.org/wijogotewit.pdfIn PDF document text
    • http://wejaduz.mypressonline.com/how_to_say_new_beginning_in_hebrew.pdfIn PDF document text
    • http://xigobaxubegozuv.22web.org/91174121816.pdfIn PDF document text
    • http://indohealth365.online/chaar_sahibzaade_a_video_songqtedc.pdfIn PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/foxiludo.pdfIn PDF document text
    • http://vovavipegum.getenjoyment.net/46551115506.pdfIn PDF document text
    • http://sivelural.mygamesonline.org/words_that_start_with_o_that_are_positive.pdfIn PDF document text
    • http://igafnd.org/cochlear_nucleus_kanso_sound_processor_price67mal.pdfIn PDF document text
    • http://taher-tcac.com/how_to_find_stress_concentration_factor_in_solidworkssgff6.pdfIn PDF document text
    • https://vedemolo.weebly.com/uploads/1/3/4/7/134702866/f371fa8a05.pdfIn PDF document text
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/2797702.pdfIn PDF document text
    • http://uggi-ugg.com/9824617150n1z3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemabam.myartsonline.com/100_aos_de_soledad_netflix.pdfIn PDF document text
    • http://xasonivuk.epizy.com/chemistry_structure_and_properties_2nd_edition_free_download.pdfIn PDF document text
    • http://xakosafejel.epizy.com/first_day_of_fall_worksheets_for_kindergarten.pdfIn PDF document text
    • http://vilobeve.rf.gd/how_to_say_taco_truck_in_spanish.pdfIn PDF document text
    • http://vajezozaxapom.rf.gd/kegevosufopabifo.pdfIn PDF document text
    • http://moxogojokerop.rf.gd/far_from_the_tree_cider_envy.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_off0000d555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD555 5564 bytes
SHA-256: 6d46fe10f17599b6a6e089e99bc6be5a2f6429ed046c9397973c3795bd744a1a
font_01_sfnt_off0000e80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80C 10776 bytes
SHA-256: e8fa00f7e7db46c8ff0b692a4dee80e883b9100db1876a52f442a64b9007bf4e