Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6856268955ef641…

MALICIOUS

PDF

82.2 KB Created: 2021-04-02 05:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ecc385ca2cd98deb824f70f44f76b82a SHA-1: 73a78b082e0226e0ee31b3fefcea4c0a788ff670 SHA-256: c6856268955ef641c64b3b0e104aa1aef64a3c84c5df11a86c6744daeb422721
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://gimoguvi.ru/aws?utm_term=casio+protrek+solar+powered+watch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410216/normal_604f693d86175.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/gfyDrhc/bad_piggies_full_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/gidowoji/dhklied/download_biz_builder_delux_sp_mod.pdfIn PDF document text
    • http://gejejasofubi.mywebcommunity.org/79582370491.pdfIn PDF document text
    • https://binikefesomeb.weebly.com/uploads/1/3/5/3/135386190/rexoruwutiri.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/dieta_saludable_para_embarazadas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387566/normal_6004f8e44e122.pdfIn PDF document text
    • http://rixadixiji.scienceontheweb.net/ley_anticorrupcion_colombia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501495/normal_5ffece3ab19aa.pdfIn PDF document text
    • https://cdn.sqhk.co/gipakegabav/Fzjdihk/report_lost_driver_license_utah.pdfIn PDF document text
    • http://xiwesesakuvel.medianewsonline.com/53705729226.pdfIn PDF document text
    • https://rakurewirusemew.weebly.com/uploads/1/3/4/0/134017151/b56b75.pdfIn PDF document text
    • https://kikafizujugu.weebly.com/uploads/1/3/4/0/134012642/8904359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_603e07fdee364.pdfIn PDF document text
    • https://letogapebo.weebly.com/uploads/1/3/5/3/135320268/rowumifuxapovawus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_5fd982b00768c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoligagomuwe.onlinewebshop.net/pet_sematary_official_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/39907771693.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/72760472829.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/kuzaziluvexawisiwawij.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/myspanishlab_answer_key_chapter_11.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/how_to_program_autopage_remote_xt-43lcd.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC3 5220 bytes
SHA-256: 21fc6dddc830670eccd66fdee5114bac3b1f88bf65390ca0aa90376252b52a00
font_01_sfnt_off0001118e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118E 11992 bytes
SHA-256: 7679d7a59e944c1155da7b0f7ffca6b78f8323d13d5833bdd8b900d191d50642

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