Malicious PDF — malware analysis report

Static analysis result for SHA-256 0352ab755f42d8d2…

MALICIOUS

PDF

82.5 KB Created: 2021-04-27 11:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f7985f002391533287e1a43eea22fd5e SHA-1: d7045a9e2cab94bc13b141bbbbb4bda4cc262b13 SHA-256: 0352ab755f42d8d27b8e9944756fd470a44d370a73875f787923fd6568cef750
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 0.9996

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://dafemum.ru/strik?utm_term=vibe+5+in+1+universal+remote+manual+pdf PDF link annotation
    • http://xelasurugopu.mywebcommunity.org/mathematics_of_money_management.pdfIn PDF document text
    • http://topcreditcheck.info/james_joyce_short_story_araby_analysislf8x7.pdfIn PDF document text
    • http://smartbright.club/11562412706ne7un.pdfIn PDF document text
    • http://torixobo.mypressonline.com/free_download_splitter_and_joiner_software.pdfIn PDF document text
    • http://megalit-korolev.ru/shoreline_mafia_musty_freefb35b.pdfIn PDF document text
    • https://felomadexibeb.weebly.com/uploads/1/3/4/6/134687620/12df2a44.pdfIn PDF document text
    • http://gazagidumow.mygamesonline.org/tevebimukemazixip.pdfIn PDF document text
    • http://housefashion.ru/forifazxni3v.pdfIn PDF document text
    • http://igonlinesupport.com/genetics_from_genes_to_genomes_2nd_edition5edga.pdfIn PDF document text
    • http://hocostyle.ru/ensayo_el_monje_que_vendio_su_ferrari_introduccion1q3g0.pdfIn PDF document text
    • http://flathead.us/using_thinkorswim_with_robinhoode7rj7.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/ap_calc_bc_practice_test.pdfIn PDF document text
    • https://senemoribut.weebly.com/uploads/1/3/4/7/134703027/fofizutupodil.pdfIn PDF document text
    • http://siteznakomstv69.space/migrate_exchange_2007_to_office_365_hybridhrbnc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d20c4b17-5cdd-4ac3-8646-20013f630077/why_does_my_craftsman_weed_eater_dies_when_i_give_it_gas.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/19010340827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ea8d79-6e39-4bac-a448-f5fd7d9a2ae5/how_to_get_splat_hair_dye_out_of_bathtub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7149793d-db58-4ff1-88fc-a17b3eda87b4/17845379612.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/used_2008_jeep_wrangler_4_door_for_sale.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/pemeriksaan_ballard_score.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/ajax_upload_file_without_formdata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484728eb-15a8-4a45-89dc-8a60d817b358/sex_drive_board_game.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 5528 bytes
SHA-256: 9b4c02fc987c05c1147cc1ef93489e6303354102cd6aef3469a11a889e3fb0da
font_01_sfnt_off00011444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11444 11172 bytes
SHA-256: ab6f108feda45ef23e7021ed7206aafddac9f0e0fbc8ef964effebeb0680ed76

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