Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba08706b21293a5…

MALICIOUS

PDF

76.0 KB Created: 2021-02-20 16:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 66d265fa58f72e07b2605a443607f541 SHA-1: 0f56c1e5a62012fbffedb8b1315984f15da022a4 SHA-256: 1ba08706b21293a5c1502682e4cb86f1cfe67be956135e8e3b78b04a4a2182c8
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one prominent URL pointing to a domain that appears to be used for malicious redirects. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The document body, though heavily obfuscated, suggests a lure related to a popular recipe, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=kfc+double+down+sauce+recipe PDF link annotation
    • https://pabedowilopore.weebly.com/uploads/1/3/1/1/131163579/2959500.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/xivutiv_tuzomawetab_vuvigarufuduju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403531/normal_600708d479890.pdfIn PDF document text
    • http://setifol.66ghz.com/cm_security_vpn_mod_apk.pdfIn PDF document text
    • http://andyhong.blog/61350969073ly2qd.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/bunirizukuwarus.pdfIn PDF document text
    • http://businessoutsourcing.info/tamil_gana_prabha_amma_songsp2pms.pdfIn PDF document text
    • http://kopolebukerone.iblogger.org/96174217327.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493881/normal_6003dc15ddec0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370744/normal_5ff53d181e05f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480402/normal_5feee6140ac71.pdfIn PDF document text
    • http://domsale.xyz/fagewujamea5gox.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://begilokikilox.rf.gd/vshare._eu_video_er.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/toddler_bed_fitted_sheets_uk.pdfIn PDF document text
    • http://sosasofojatage.epizy.com/89738401887.pdfIn PDF document text
    • http://lunobejol.rf.gd/scary_stories_to_tell_in_the_dark_streaming_vf.pdfIn PDF document text
    • http://lurapuven.epizy.com/conclusion_de_enlaces_quimicos.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/impact_factor_nature_scientific_reports_2015.pdfIn PDF document text
    • http://fedixowodok.epizy.com/pavulowulebiduzipazipes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE83 5152 bytes
SHA-256: ed1407db743ff7fc0090bfb78f8767e8fc19375efc3385952518ac994cbf68c2
font_01_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 10616 bytes
SHA-256: 4cb794ed7e183e6ec176f32b112f558063e246ad158d636b590fdce58324210a
font_02_sfnt_off0001146c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146C 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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