Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d1af63acc747fd…

MALICIOUS

PDF

73.3 KB Created: 2021-02-06 20:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b0d4766ec0dcebdab228b8997eb8569 SHA-1: 0b71dff3b32aca78d70d750baf2689a8a93acdf1 SHA-256: 76d1af63acc747fd8d272527955247f3144ad8b4cb3bf207bb60c3d47e70c11d
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://leonvi.ru/aws?utm_term=maier+sports+size+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fd5f65e24357.pdfIn PDF document text
    • http://itasda.online/apology_for_poetry_summaryloh58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428078/normal_5ff3786a04ab3.pdfIn PDF document text
    • http://prizinsta365.website/48106483249poryb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405202/normal_5fe813ce0b1b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5fd1377aa9331.pdfIn PDF document text
    • http://jilet2.club/jekewm6fty.pdfIn PDF document text
    • http://lozhobelir.space/jugomebkwvyx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fd1742e3b445.pdfIn PDF document text
    • https://tuxakosubulep.weebly.com/uploads/1/3/4/0/134012578/valijivojuv.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/3228634.pdfIn PDF document text
    • http://soul-felt.com/51445171753vu9m7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413850/normal_5ff60930acfae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385421/normal_5fe293cb1f54a.pdfIn PDF document text
    • http://tumbaa.space/car_crash_simulator_game_for_pc_free_download0ix0o.pdfIn PDF document text
    • https://zetodimamewiwek.weebly.com/uploads/1/3/2/3/132302859/1cd54e.pdfIn PDF document text
    • http://natiral.space/damubakexuwekukafodobukhq5h7.pdfIn PDF document text
    • http://retys.space/575768126738kc6x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 5148 bytes
SHA-256: 228ea4b03dd307de0f99b2bb7ae040310137fbc5957018ad4bf2b41d6eb65f4a
font_01_sfnt_off0000f15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15D 11528 bytes
SHA-256: abe70b2b2e3aa8e125ab0324aa9c36f10789e6781e3866cece34cbbcb7014bf5

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