Malicious PDF — malware analysis report

Static analysis result for SHA-256 89cbe928fe86cbcd…

MALICIOUS

PDF

77.0 KB Created: 2021-03-15 08:14:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a3bcd59933320d8642b20960c2c5d575 SHA-1: 97ee7c2eb715a16b251aa5bb163516eb76465ea5 SHA-256: 89cbe928fe86cbcd97e440b45520c8ed81ce725ce9ca5470588971d1ee65371d
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 0.9991

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://mezovuduw.ru/strik?utm_term=hp+laserjet+pro+100+m175nw+color+mfp+printer+specifications PDF link annotation
    • http://dogalijun.scienceontheweb.net/stanley_fatmax_level_72.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/lBjahyi/gravity_full_movie_netflix.pdfIn PDF document text
    • http://ar-foto.art/epson_xp-200_printer_not_printingw5k1p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fe230f9a90c4.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/jejhM3k/60961182255.pdfIn PDF document text
    • http://nikaold.site/jagexurabesaxenembxt7.pdfIn PDF document text
    • http://wufamega.scienceontheweb.net/susomanu.pdfIn PDF document text
    • http://andyhong.blog/dukeluretokilanef11et.pdfIn PDF document text
    • https://cdn.sqhk.co/konajera/gehibqT/57732382493.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420939/normal_600635a03d1a6.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/39ueiii/54119815398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413474/normal_5fd8d941c4713.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/73823342468.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411682/normal_6019c7cabd537.pdfIn PDF document text
    • http://obschee.xyz/bifodefitilefazpxpv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485308/normal_5fcdc68f3b519.pdfIn PDF document text
    • http://sowakowakemim.mygamesonline.org/xekexadosusowalose.pdfIn PDF document text
    • http://tonagruz.ru/43033709828iyznl.pdfIn PDF document text
    • http://zegiwire.sportsontheweb.net/action_words_resume.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/Lie63ig/comics_unleashed_worst_show.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/WjiNhjh/e_wallet_account_number.pdfIn PDF document text
    • https://cdn.sqhk.co/wavojuxokino/aQfjbPQ/excel_drop_down_list_from_another_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/kokojisip/fbwhhij/mineral_oil_for_ears_side_effects.pdfIn PDF document text
    • http://latitekiwa.scienceontheweb.net/novela_abzurdah.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piwakitidi.onlinewebshop.net/wuvazarevijaselinaxeraba.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_off0000ef30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF30 5688 bytes
SHA-256: 5ba30a54501ea2e62958b68d9d9dd23a2b2412d454f6c9de1334c76303d35599
font_01_sfnt_off00010294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10294 10292 bytes
SHA-256: ab2e8883069d96462d20d827b22c8e65ffae14b2fb95ada0f740f418e66ac7c0

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