Malicious PDF — malware analysis report

Static analysis result for SHA-256 6560de65e6796b3e…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 09:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 75ea02548d1775d1e1e713664bc5af33 SHA-1: 285373fc64980afa4de1d6a39139391c2e3d052d SHA-256: 6560de65e6796b3e77c2ea4b1a93b591823309be0f371444fea9bea0988a8fa4
184 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'Jungle biome minecraft seed', suggesting a phishing or social engineering pretext to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=jungle+biome+minecraft+seed In PDF document text
    • http://rasudilikid.mywebcommunity.org/kakemipiwitaxajel.pdfIn PDF document text
    • http://towexiwi.sportsontheweb.net/noxurafakodakaniro.pdfIn PDF document text
    • http://kositexujir.sportsontheweb.net/begudiledobojafesusu.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/calisthenic_exercise.pdfIn PDF document text
    • https://lezanixopedem.weebly.com/uploads/1/3/4/8/134886347/pokikonekin-tusos-xotiwolof.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/how_do_i_set_my_ac_to_heat_mode.pdfIn PDF document text
    • http://dududuw.mypressonline.com/kipakukakiwurekosejape.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/69395761957.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/what_does_osi_stand_for_in_the_military.pdfIn PDF document text
    • http://blockhcain.host/citizen_eco-drive_promaster_skyhawk_a-t_watch_jy0010-50ezrk48.pdfIn PDF document text
    • http://vas-rem.ru/67848180506kdb0t.pdfIn PDF document text
    • https://jodawebodo.weebly.com/uploads/1/3/4/6/134634345/puxifogolapebanisitu.pdfIn PDF document text
    • http://bestgirl69.com/crested_gecko_morph_sheetwx2b6.pdfIn PDF document text
    • http://itdiscount.pro/30057633894vy4nh.pdfIn PDF document text
    • http://fuxutigox.mypressonline.com/vijukexebopegire.pdfIn PDF document text
    • http://gavediteriremuv.medianewsonline.com/close_encounters_communication_in_relationships_4th_edition_free.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/super_mario_bros_2_3ds_star_world_3_star_coins.pdfIn PDF document text
    • https://tifuxifig.weebly.com/uploads/1/3/2/6/132695942/2205935.pdfIn PDF document text
    • https://wisipuluxix.weebly.com/uploads/1/3/1/3/131381675/7aa8dbca8.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/45a119d5-6f03-4050-adb4-2e7331bcb524/61158109262.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/gowewuvufobebez.pdfIn PDF document text
    • http://wavexijazibivat.myartsonline.com/comparing_fractions_same_numerator_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10cdf39a-4000-48cb-9753-75af3974e812/how_to_reset_lg_air_conditioner_filter_light.pdfIn PDF document text
    • http://luzojora.atwebpages.com/kaxepizukixuvokigop.pdfIn PDF document text
    • http://xoxekojut.onlinewebshop.net/le_nouveau_brevet_des_collges_2020.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_off0000ee12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE12 5472 bytes
SHA-256: a5610194358d74be74c03f0ba2d9a6d2c62f13313623056a01b60e14c1a8b131
font_01_sfnt_off0001008f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008F 10264 bytes
SHA-256: 1ac5c51152dbd8b8984b07e6735392511c6c842e134a1284b24a00d195f48e9c