Malicious PDF — malware analysis report

Static analysis result for SHA-256 25467e5b2e439b4b…

MALICIOUS

PDF

72.1 KB Created: 2021-03-20 09:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 914fb6f5a155cdc031e0d15de6bd5911 SHA-1: 5bdf145fb83ac502a42ee31c578c27ae4557682a SHA-256: 25467e5b2e439b4b46a2af4c087e4aa33a8825f51e995cd18e4c583a0fa5fe50
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 0.9960

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://fokemale.ru/strik?utm_term=fisher+paykel+fridge+water+filter+reset PDF link annotation
    • http://jarowulizose.sportsontheweb.net/bapodebizipozorelumigo.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/bgiias5/pureflix_roku_1.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/iageIif/92297757030.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386824/normal_60014c96be1fe.pdfIn PDF document text
    • http://daxamel.mywebcommunity.org/words_with_multiple_meanings_examples_and_sentences.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/what_is_grounded_theory_analysis_in_qualitative_research.pdfIn PDF document text
    • http://giwewigipebi.medianewsonline.com/biology_practical_book_for_class_11_free_download_tamilnadu.pdfIn PDF document text
    • https://cdn.sqhk.co/zudusidesu/RjesJX1/23487158576.pdfIn PDF document text
    • http://paxabak.mypressonline.com/disneyland_california_map_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454672/normal_60439665efd86.pdfIn PDF document text
    • http://mimivamefigupe.sportsontheweb.net/77801882583.pdfIn PDF document text
    • https://cdn.sqhk.co/jofomopunaw/6oghkKw/aladdin_movies_2009.pdfIn PDF document text
    • http://pupezawat.scienceontheweb.net/best_quote_for_honesty.pdfIn PDF document text
    • http://xipevufizokev.iblogger.org/kegisovoka.pdfIn PDF document text
    • http://japadalifu.22web.org/wofiwudux.pdfIn PDF document text
    • http://lonotel.mygamesonline.org/pudodezijoforabixin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_604b0af74183e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450719/normal_603c2b9f9701d.pdfIn PDF document text
    • http://virinuwatun.iblogger.org/dark_alliance_gary_webb_barnes_and_noble.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://welurolakis.epizy.com/carpophilus_hemipterus.pdfIn PDF document text
    • http://xalenefinuj.rf.gd/wumij.pdfIn PDF document text
    • http://xutakubu.epizy.com/is_getting_a_degree_in_spanish_worth_it.pdfIn PDF document text
    • http://kolosavozogu.rf.gd/html_to_c_free_library.pdfIn PDF document text
    • http://torejejowomu.myartsonline.com/antihistaminicos_2020.pdfIn PDF document text
    • http://kopevevax.rf.gd/mimavigum.pdfIn PDF document text
    • http://titomozuluvexov.epizy.com/jozalifelokalemotezobex.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_off0000dbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBB 5516 bytes
SHA-256: 3a3cab606913e08e7f463a230ecd0d3f0772095bc12e3f82344d7ac6d30c0e46
font_01_sfnt_off0000ee95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE95 10632 bytes
SHA-256: b7c54913ee12bb6d2dcfcfd70be2723dbf23a82cf66fe41172aeb9bd236e3c34

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