Malicious PDF — malware analysis report

Static analysis result for SHA-256 80db64c59edaffad…

MALICIOUS

PDF

98.4 KB Created: 2021-05-15 22:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4f61e0da54c4da6ccece177d7fde141a SHA-1: 9cb51c1df5305d8114bf114dfef7f68e9274885b SHA-256: 80db64c59edaffadf27dfa0fc036d18aa84febb7a484ae3c6284142ee210eaa4
126 Risk Score

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 0.9992

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://fokemale.ru/strik?utm_term=what+are+the+characteristics+of+a+chaparral+biome PDF link annotation
    • http://donbetosstreettacos.com/739899234883qjc8.pdfIn PDF document text
    • http://italiabeach.space/lemulevyp3yx.pdfIn PDF document text
    • http://prizinsta365.website/komijekifurapukadusarivoggs45w.pdfIn PDF document text
    • http://fineagencyy.com/why_do_my_led_lights_keep_flashing3d5by.pdfIn PDF document text
    • http://pugorot.mygamesonline.org/81581048336.pdfIn PDF document text
    • http://ritual-venki.online/will_exercising_30_minutes_a_daytcwyf.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/will_there_be_a_new_harry_potter_movie.pdfIn PDF document text
    • http://getcabinets.xyz/32982387886dc4ch.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/psicologia_organizacional_que_es.pdfIn PDF document text
    • http://seropuxaxogel.22web.org/navivuwuro.pdfIn PDF document text
    • http://betmoy54.com/wenozarovuvavukotulb8k50.pdfIn PDF document text
    • http://trujillostacoshop.com/53773264646p7drd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cf336f9a-6a79-4542-9269-5b62d6eb69dd.filesusr.com/ugd/1daf83_e43fe306bd464095a95eb5acf9984a37.pdf?index=trueIn PDF document text
    • https://6db1e9a2-4282-4636-8d41-de07325ad911.filesusr.com/ugd/d97b38_78fc47ead25c4c00b62e19bdc995cc99.pdf?index=trueIn PDF document text
    • https://5f98d79b-b704-4ecc-a618-200e52db7f79.filesusr.com/ugd/d1a5b7_7ece14db0bb145658ee9691fb38f91ce.pdf?index=trueIn PDF document text
    • http://marojinoz.rf.gd/angle_relationships_equations_worksheet.pdfIn PDF document text
    • http://lojarine.epizy.com/a_type_of_spreadsheet_software.pdfIn PDF document text
    • http://xijizofupe.rf.gd/rerimonuke.pdfIn PDF document text
    • http://jijetebum.epizy.com/dazopomumewalifazo.pdfIn PDF document text
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_57b7b7e4662c4741a62b27fd93c7d8d8.pdf?index=trueIn PDF document text
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_d4712b636ba249f4a7e667f680cbb45a.pdf?index=trueIn PDF document text
    • http://rosevasejila.myartsonline.com/wikuguwuvamogivebebif.pdfIn PDF document text
    • http://giwaxavuf.epizy.com/alegreya_sc_regular_font_free.pdfIn PDF document text
    • http://fuzesezetigogum.epizy.com/cinematographic_language.pdfIn PDF document text
    • http://nikibalanijesaf.rf.gd/lagu_band_maid_choose_me.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_off00013f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1D 5408 bytes
SHA-256: 7238352cc93f269ea5f4bf39b779b0237ba8cb33ecdc379f1ca0adbc06b42263
font_01_sfnt_off00015164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15164 12096 bytes
SHA-256: e6e9efff038c3b9f329a4c134508f7600754c18815d5661a504f8038eeffdeb6

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