Malicious PDF — malware analysis report

Static analysis result for SHA-256 452fdf5e6b612162…

MALICIOUS

PDF

72.3 KB Created: 2021-02-24 12:36:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6dc3471c0683704867759122b3fceb16 SHA-1: 7b9f7ad239ae664bdb133ef47dfc6a34f89bd507 SHA-256: 452fdf5e6b612162d3aa903f42e52b094a4c0e0c98559cabff71bb69910a2228
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://bologen.ru/wix?keyword=remo+recover+keygen+free+download PDF link annotation
    • https://verigidiloje.weebly.com/uploads/1/3/0/8/130874422/juteruxuro-wereju-werixobaguja-dukikarujiwor.pdfIn PDF document text
    • https://netukilegulises.weebly.com/uploads/1/3/1/6/131606016/74a5828ba.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/iagg5if/mx_player_android_tv_app.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/3154343.pdfIn PDF document text
    • https://wotewaga.weebly.com/uploads/1/3/4/6/134615540/jotalituze_garivekiwibel_nafofakuri.pdfIn PDF document text
    • https://dibasipelop.weebly.com/uploads/1/3/0/7/130738559/pegesufusixire.pdfIn PDF document text
    • https://pugulewex.weebly.com/uploads/1/3/1/4/131406013/bapojup-batemevipaze-vaxujobezotud.pdfIn PDF document text
    • https://bivedaniliged.weebly.com/uploads/1/3/4/7/134732971/2387812.pdfIn PDF document text
    • https://labivorimafixal.weebly.com/uploads/1/3/4/8/134886738/f5b8053bd.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/82712f.pdfIn PDF document text
    • https://xajimago.weebly.com/uploads/1/3/0/8/130813364/4611355.pdfIn PDF document text
    • https://cdn.sqhk.co/delotijuw/hdIhdjd/chocolate_ice_cream_recipe_with_evaporated_milk.pdfIn PDF document text
    • https://witetalujoloxof.weebly.com/uploads/1/3/0/7/130740434/zifodidutifevu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pisisagul.epizy.com/new_look_white_rose_opening_times.pdfIn PDF document text
    • http://gokamevagared.epizy.com/zasiteje.pdfIn PDF document text
    • http://wegemejejo.epizy.com/e_coli_and_total_coliform.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_off0000dd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7E 5488 bytes
SHA-256: 373d7d4a956af9401b75be917bb39665ec4e1773b2d0b6ba60815caf2baa5769
font_01_sfnt_off0000f03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03E 10420 bytes
SHA-256: cc45bfeb8f6ddd34e264c6bc8529de336e87c6c8c0800cd7e0453f556d74e90f

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