Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6bf1e22fadadda…

MALICIOUS

PDF

86.9 KB Created: 2021-03-27 23:21:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e433155c73104ef6ed5c3ca26bdf4c73 SHA-1: 105c372363da43410a940cbbde177d40ab651ed9 SHA-256: bd6bf1e22fadadda572e5a91463b943e42cf8c585eeecec8240711c441ee5ea7
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 0.9989

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://nipisod.ru/123?utm_term=algebra+math+regents+answers PDF link annotation
    • https://lonegaru.weebly.com/uploads/1/3/0/9/130969637/fososujokine.pdfIn PDF document text
    • http://lonotel.mygamesonline.org/antifriction_bearings.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427526/normal_5feb4c836caa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470400/normal_600ff40314341.pdfIn PDF document text
    • http://mudixefibewab.mywebcommunity.org/elementary_symbolic_logic.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/1945_harley_service_car.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387241/normal_60067f25b6f1a.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/how_many_times_can_you_day_trade_crypto_on_robinhood.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/pepevegevibijoga.pdfIn PDF document text
    • https://wopixidotawus.weebly.com/uploads/1/3/4/5/134506387/5172872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406168/normal_600b757c4d396.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/political_map_of_south_america.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/bivefunivexajure.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/zefukeroxuterafogula.pdfIn PDF document text
    • https://cdn.sqhk.co/jivumigen/eidjbFw/roller_rush_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/8jjvB8R/foldersync_apk_pro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480895/normal_602c4b1592a56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fukorow.epizy.com/karaoke_cdg_player_software_free.pdfIn PDF document text
    • http://kesupipipiret.onlinewebshop.net/small_pro_apk.pdfIn PDF document text
    • http://tonavisuma.onlinewebshop.net/jidif.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/why_did_japan_and_germany_withdraw_from_the_league_of_nations.pdfIn PDF document text
    • http://zaluzuwoz.rf.gd/54115321246.pdfIn PDF document text
    • http://xemigososefof.atwebpages.com/23018371091.pdfIn PDF document text
    • http://wekapalipewux.epizy.com/18606773269.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FE 4948 bytes
SHA-256: e756eefb6d0677b78ef597f50de50d5b41f0f7459f24d59b4fb17c5b63de4782
font_01_sfnt_off000118a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A8 11552 bytes
SHA-256: 6c1d359418d4d6518f6106065f64bdb19dbaf261e95bbfa881466a5f2d475e16
font_02_sfnt_off00014003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14003 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.