Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa0fc07b1e14e9e…

MALICIOUS

PDF

60.4 KB Created: 2021-01-16 14:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 48c622fbd5d859c15458272cfa650d98 SHA-1: ee9abfdfcc521fa9fd1e2757686ecae04de54a70 SHA-256: 0fa0fc07b1e14e9e5f28ba63bb85f1da2c2a8c8af4d49806810768fdec84c0d0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document contains numerous embedded URLs and is structured as a link farm, aiming to redirect users to external malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests a deliberate attempt to obscure the true destination and evade detection.

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://traffnew.ru/aws?utm_term=flowers+for+algernon+quiz+pdf PDF link annotation
    • https://site-1172205.mozfiles.com/files/1172205/crossword_clue_summary_of_beliefs.pdfIn PDF document text
    • https://site-1174146.mozfiles.com/files/1174146/43446213370.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/rhdjiSe/sun_mountain_mc3_golf_micro-_cart.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/6701a34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426676/normal_5f9cbeaa09f07.pdfIn PDF document text
    • https://site-1176622.mozfiles.com/files/1176622/dulisexavinumu.pdfIn PDF document text
    • https://site-1178187.mozfiles.com/files/1178187/novesusoxegovasap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/16225782230.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/information_technology_meaning_in_gujarati.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/xunadevi.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/end_behavior_of_polynomial_functions_chart.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_off0000afbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBD 5432 bytes
SHA-256: 89faaf5f12419b9e62aa5100890937a9961d78d6b49e6e8c3053e1b83ad29bb9
font_01_sfnt_off0000c256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC256 10300 bytes
SHA-256: 659fd53efca2ca03a8b84b62e94b88ed269cdb5e075424872fc302fe3249d708

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