Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8acf6ac9ac3056…

MALICIOUS

PDF

69.6 KB Created: 2021-03-09 06:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b1b89bfce2b831937121aa321f2f5c54 SHA-1: 27474737711c6535eef30e8b28adc90622ee7e6c SHA-256: 6f8acf6ac9ac305602a46c0b5b2f88ae0d7761492d1400182e1c1b01f7bc97b7
126 Risk Score

Malware Insights

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

The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, many of which point to disposable hosting and are used in link farms, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the PDF structure indicate an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=dodge+dakota+manual+transmission+rebuild+kit PDF link annotation
    • http://esclub.pro/clash_of_kings_game_downloadg4n5h.pdfIn PDF document text
    • http://gnfcns.info/91026141627t6l7d.pdfIn PDF document text
    • http://allerlo.xyz/whats_the_difference_in_the_unrated_version_of_50_shades_darker7b13v.pdfIn PDF document text
    • https://giwelexe.weebly.com/uploads/1/3/0/8/130814055/vitipapituvuned-rowajuf-tenagiwiweno-tuvad.pdfIn PDF document text
    • http://wspring.space/false_gods_of_todayu5rwb.pdfIn PDF document text
    • http://matroskin.space/jukixavuxafavuzodi1z1c.pdfIn PDF document text
    • https://lexapokugivida.weebly.com/uploads/1/3/1/8/131856754/ximowa_wuvusalofemovol_tobelubiduwi.pdfIn PDF document text
    • http://sodalabs.club/duxikipeseguw1k67.pdfIn PDF document text
    • https://vonuvevija.weebly.com/uploads/1/3/1/4/131407152/2415040.pdfIn PDF document text
    • http://importants.space/wunekojesevogacm2m.pdfIn PDF document text
    • http://proita.space/abnormal_psychology_17th_edition_freek4jiu.pdfIn PDF document text
    • http://cashfree.store/how_to_clean_navien_tankless_water_heaterrz3xa.pdfIn PDF document text
    • http://webdefilmizle.com/dizolerusomiworivodoluzdrkd.pdfIn PDF document text
    • http://oneplusonemain.xyz/how_to_pair_ipega_bluetooth_controllerfccqw.pdfIn PDF document text
    • https://vekafikag.weebly.com/uploads/1/3/5/9/135986004/3547409.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_a91fbd35b2684e1db07c090fa28ffe03.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c4f0cf-f1a2-41ad-bb9a-408647e46798/jewepiduzetariguwasofunan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/263b2ed6-ee0c-4933-98e3-2657b1e4f860/zatobunalotixunanazosiwo.pdfIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_38a45678c4794950b1384bdb663f643f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9ed8a1-a547-4866-ad40-2d8aa834c67b/26314098599.pdfIn PDF document text
    • https://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_8ff48420d25b417b948ae7cd5bc8defd.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_off0000d03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03C 5348 bytes
SHA-256: 9aaa13a8aaee3cd7c4aea35e79099508fd251d4677cd8fe85a9d7f990bab5c3e
font_01_sfnt_off0000e25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25D 10944 bytes
SHA-256: f9bece9f604f65ea9f0697acac39584a2a60f0607bb701a737e3275f58672717

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