Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9fa009cf5e961c…

MALICIOUS

PDF

85.1 KB Created: 2021-04-01 13:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2b7f25da0814828dc2a1af87a7f82af4 SHA-1: b006bbe9dd2caeb4e70123ef57c7b1d96b34e748 SHA-256: ce9fa009cf5e961c0f38b20611df58be53b9e9e45958b354cba5908e995731fc
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/award?keyword=preparation+and+sterilization+of+culture+media+pdf PDF link annotation
    • https://cdn.sqhk.co/wevafofed/chfthh3/download_table_top_racing_free_mod.pdfIn PDF document text
    • http://sikevemekoma.mypressonline.com/7222006848.pdfIn PDF document text
    • http://yildirimotobursa.com/cch_ngm_ru_mt_c_hi34l2m.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/marketing_articles_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5ff42ce13ae78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489975/normal_6062abae78ad6.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/kRgfCPF/onedrive_login_error_0x8004de25.pdfIn PDF document text
    • http://rasazajafatirek.mypressonline.com/33720214192.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/igijiaO/first_home_buyers_program_in_ohio.pdfIn PDF document text
    • http://detonic-italia.website/30194402300zi1jv.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/eggnYi8/76495383559.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/gfXgejh/42644333471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472200/normal_605d960225884.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393625/normal_5ff9097ee933f.pdfIn PDF document text
    • http://lifeit.pro/57304351052mhilk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/damerirazib/bloomberg_barclays_us_treasury_index_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477d4c27-0afd-4f31-8c95-217128705e7a/spanish_present_perfect_tense_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8333ec21-b263-435c-a8c5-3c86de766023/how_to_use_a_z_score_table_to_find_percentile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac1824ac-2c64-477d-8af7-db57fd44fdcc/nezuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/loderi.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/letter_of_recommendation_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba4edd6b-fad4-4dbf-bfb1-eea8621afc10/the_lord_of_the_rings_telugu_dubbed_movie_download_movierulz.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_off00010e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E44 5352 bytes
SHA-256: 0c80b9a85b3d139e9c57babf9ce4a8949ba5f085d375fa8b2577fa79f523f339
font_01_sfnt_off00012068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12068 12012 bytes
SHA-256: fe9425890a5994f86fedd89ea447a61be08cfe1df898802b05b522d4a39cbdb4

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