Malicious PDF — malware analysis report

Static analysis result for SHA-256 48666c3295e49091…

MALICIOUS

PDF

81.2 KB Created: 2021-04-16 06:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6d69c9446c3d048d23a23d8e1e0c2f59 SHA-1: 77d063b34599b2e75478492ebbdf3d1766c89461 SHA-256: 48666c3295e49091fcca455363c06456392b675ba178752a4cfc1eb2743d037e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=how+many+total+languages+are+spoken+in+nepal PDF link annotation
    • http://vvd.bar/nugowosugexonijinosuw9rpu2.pdfIn PDF document text
    • http://cyberlife.store/weluwitugesonasalilipukavu8xh5.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/zekitusuwusibemuparuw6ihxc.pdfIn PDF document text
    • http://letgtma.bid/67374475587qb964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483833/normal_60375bd056f8e.pdfIn PDF document text
    • http://drovazvenigorod.ru/josotimvv26.pdfIn PDF document text
    • http://you-bestshop.xyz/give_us_three_interesting_facts_about_yourself8ry0u.pdfIn PDF document text
    • http://justamorem.com/guided_by_voices_weed_king_lyricsp3gf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463275/normal_5fd9aeff64aac.pdfIn PDF document text
    • http://axecheat6.xyz/dakivowavuzinafurowuyssww.pdfIn PDF document text
    • http://rating-bookmaker.ru/zowubinivikozanixanzvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451954/normal_6069e3aaa7b30.pdfIn PDF document text
    • http://termometr-medikal.site/pictograph_worksheet_4th_gradepsxwy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502245/normal_604ef333b1a1a.pdfIn PDF document text
    • http://iwhite.space/cg_police_constable_admit_card_2018vq82n.pdfIn PDF document text
    • http://urolog.xyz/76394585214amton.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408997/normal_602fb2ce1bb68.pdfIn PDF document text
    • http://tryici.xyz/45285731889x5hx6.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/826265742497ifdo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487622/normal_600ce027ebde8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5fda1912aad16.pdfIn PDF document text
    • http://vandify.com/how_to_fix_corrupted_data_on_ps4_pro208mg.pdfIn PDF document text
    • http://pubggaming.online/el_hobbit_1977_pelicula_completa_espaolf8zaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF11 5240 bytes
SHA-256: aef890bb34a6b6d9c812c6ec2c23062ff02e56e725eb24d5395e85af9f4f281c
font_01_sfnt_off000100de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DE 11196 bytes
SHA-256: 7c20edc49ffa1da6601dba408c6bfce0cec38cb89c96e884b74101959394fbf8
font_02_sfnt_off0001274b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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