Malicious PDF — malware analysis report

Static analysis result for SHA-256 164618d20864a8a3…

MALICIOUS

PDF

92.3 KB Created: 2021-05-13 10:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3e51209e72a7385dfce8f8f25f0cdadc SHA-1: 081a193b5386eaae5107743937cc694270ab7f2f SHA-256: 164618d20864a8a3c806909561e99c2bf4d02e2f680f547b1b0e45a30efe32db
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/strik?utm_term=where+can+i+donate+used+soft+toys PDF link annotation
    • http://patutejugivipi.iblogger.org/the_bfg_full_movie.pdfIn PDF document text
    • http://shop-kid-toys.online/nipeketupa0ui1z.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/poluditewelumobal.pdfIn PDF document text
    • http://pojibuvuj.mygamesonline.org/telecharger_bob_et_bobette.pdfIn PDF document text
    • http://sitonuba.mypressonline.com/30433929829.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://siradiru.22web.org/6080528727.pdfIn PDF document text
    • https://migawonakizize.weebly.com/uploads/1/3/1/6/131637147/komaxopuwafurit.pdfIn PDF document text
    • http://chambrehq.xyz/apc_back-_ups_cs_650_manualtlszc.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/appdynamics_api_synthetic_monitoringdoomd.pdfIn PDF document text
    • http://bavimobuxadu.medianewsonline.com/lexus_nx_300h_2018_review_uk.pdfIn PDF document text
    • https://beveroseve.weebly.com/uploads/1/3/5/3/135316004/xibawefi.pdfIn PDF document text
    • http://grizhoff.ru/4268450835906onl.pdfIn PDF document text
    • http://center-about.com/jugnos_monster_pizza_menu_2018uvfww.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/how_do_you_write_a_self_appraisal_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab4d542-476c-48e4-862e-1fd3715dcc0f/best_red_light_therapy_device_for_face_and_neck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb84f274-0836-467f-82e7-7290d8c650a3/setako.pdfIn PDF document text
    • http://wisiver.rf.gd/japanese_n1_vocabulary_list.pdfIn PDF document text
    • http://kesewalasefikef.epizy.com/technical_chart_analysis_book.pdfIn PDF document text
    • http://zixadadafupeg.epizy.com/baseball_card_game_for_android.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001077e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077E 5192 bytes
SHA-256: 5fbe5850e2b79c343f225810af84d00fc86d1f2e596f6c233b3b85db39f14407
font_01_sfnt_off00011934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11934 2256 bytes
SHA-256: 07defb19cbd5d483ae5a36fc7ff0a9849cb597f76d6109b46529c3668a2d46c6
font_02_sfnt_off0001239d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1239D 11920 bytes
SHA-256: 6b59cdf37ee55b4de65bcc5894b0b21117230e81b13bfbe56011620ced3a76af
font_03_sfnt_off00014c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4C 16096 bytes
SHA-256: 61761e6c71fdd980502ce8a3a8cbf9590216241eb9eabe72fdf309a1c23cd3c2

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