Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7d2c8fb6d00a59…

MALICIOUS

PDF

79.9 KB Created: 2021-05-16 19:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 42d16001a07a330eb4a55c46556002ab SHA-1: 95d0dabdb46983d76b598aaa683dd7207050443e SHA-256: 7a7d2c8fb6d00a59c2b91594636dfc26e6decd82a3acb8612396745273df7aa7
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://crophysi.ru/strik?utm_term=garmin+gpsmap+64st+buy PDF link annotation
    • http://pisufixefonof.scienceontheweb.net/breast_cancer_project.pdfIn PDF document text
    • https://cdn.sqhk.co/voguzasijur/gdhdwgi/dr_dre_ft_b_real_puppet_master.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/gm_diet_plan_weight_loss_stories.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/fh71sdg/vector_definition_geometry.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/bwlOvgc/barsat_film_ka_gana_movie.pdfIn PDF document text
    • http://pozufopajosel.mypressonline.com/digilamexa.pdfIn PDF document text
    • http://podarokinsta.online/98730172933cgs25.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/naligibarubuvopatejilim.pdfIn PDF document text
    • http://getveran.site/51373784667fussz.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/3581433565.pdfIn PDF document text
    • http://jirafka.space/atmosphere_lullaby_music_for_babiesc6gp4.pdfIn PDF document text
    • https://cdn.sqhk.co/nopusixinid/eBWhboE/29378984705.pdfIn PDF document text
    • http://lotto-investclub.com/how_to_breed_the_pokemon_you_want_with_no_experienceggeb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_926016f6a8b74b7f8cac87bb05d031bb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d66e4c-3df4-4240-9538-1279bd899659/can_you_print_checks_from_quickbooks.pdfIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_f231e699ce1b4d2680c0fb96f687340d.pdf?index=trueIn PDF document text
    • http://doxokalisawe.myartsonline.com/oscar_wilde_salome_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f6b3783-020d-4622-9e5c-6cfb3a4a0a82/10115773837.pdfIn PDF document text
    • http://xufoziminep.onlinewebshop.net/vubabejoxoga.pdfIn PDF document text
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_5b3d3f1e952f4ac59cac2c141472696d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/031715d2-2e36-4ee9-b4fe-b191b8926f44/nabupeli.pdfIn PDF document text
    • https://fb5b3b17-6e6a-47c5-ae49-26eddba71e57.filesusr.com/ugd/aff7be_f4483a77edf042bcaa89e1b5f9538b59.pdf?index=trueIn 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_off0000fa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA46 5624 bytes
SHA-256: e58a0d8970f35be41d8b4bb8ed050b8128abebec16fdda0c3fb457f898724c0b
font_01_sfnt_off00010d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5F 11260 bytes
SHA-256: d51f9e65cd8eb71c5cf01718c98e86caea52438785983e8b8e06907f42cb4a48

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