Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26ba6064c64249b…

MALICIOUS

PDF

80.5 KB Created: 2021-04-06 16:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9fbdd808cbac06b925a4a8725dac43ec SHA-1: 7a4ca1b74c8282eb74e2ecd40adbca331e833af8 SHA-256: e26ba6064c64249b0cf23178eac1d50ce62e83bd8302540a7593512d9f5d4402
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 0.9998

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://leonvi.ru/strik?utm_term=porque+le+salen+granitos+blancos+en+la+cara+a+los+bebes PDF link annotation
    • http://xivobivivupe.mygamesonline.org/62828095417.pdfIn PDF document text
    • http://sexonorom.22web.org/dabaregawuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fd1bae03ff30.pdfIn PDF document text
    • http://premium-cinema.com/much_ado_about_nothing_beatrice_quotes_on_loveqq27j.pdfIn PDF document text
    • http://yewes.space/supply_chain_management_mba_onlinekq6gv.pdfIn PDF document text
    • http://itash.space/47604247660jjs1s.pdfIn PDF document text
    • http://iqecoportal.ru/powoseguredewilojalmvig.pdfIn PDF document text
    • http://hisgohar.site/21674634347zhet8.pdfIn PDF document text
    • http://item-mask.top/vugelagugokujzm0kc.pdfIn PDF document text
    • https://guwevene.weebly.com/uploads/1/3/1/4/131437413/pawewubimijukif_jupezotabokib.pdfIn PDF document text
    • http://jobs-ingenieur.best/how_old_is_artemis_fowl_in_the_first_bookhr42k.pdfIn PDF document text
    • http://cmb-societe.com/524474027287bkdf.pdfIn PDF document text
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/wexoromakunogaro.pdfIn PDF document text
    • http://metryck.info/canopus_edius_6_full_freenyj97.pdfIn PDF document text
    • http://wekanisa.scienceontheweb.net/watch_big_little_lies_online_free_reddit.pdfIn PDF document text
    • http://toladidiripe.iblogger.org/modul_akuntansi_keuangan_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371808/normal_5fd098fdd9ad4.pdfIn PDF document text
    • http://copyright-rules-help.com/71527524914yhq61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxekup.rf.gd/spinal_anesthesia_journal.pdfIn PDF document text
    • http://xotekibibira.rf.gd/pixemanezibenudinano.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_off0000faca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACA 5236 bytes
SHA-256: 5416bbc5474efa70165976ea4b771981ed3dc55244b376b6342fd7ca194208e5
font_01_sfnt_off00010ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA6 11400 bytes
SHA-256: bb2eead5deff4826f504f3eef0fed3135e2f06016d8154e558b3bcba9584cee4

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