Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cfa20b1e7eeaee…

MALICIOUS

PDF

77.1 KB Created: 2021-04-18 00:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b4c4c906faf0ec540a25ee5fde6f2bec SHA-1: ee48f90f5cd3ba0e12df1b4d0a9b3ef7e637d8d5 SHA-256: 09cfa20b1e7eeaee90d4ba263714230ad6e67b26cfc73cf7ee06a03639672364
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to an 'antenna upgrade'. The presence of multiple disposable hosting links further indicates a malicious intent to distribute potentially harmful content or conduct phishing operations.

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://lozipotod.ru/strik?utm_term=midland+75-822+antenna+upgrade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460460/normal_5fda6c33e8f32.pdfIn PDF document text
    • http://indir-kazan.com/pipobibuswxs8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_6016a628db3f3.pdfIn PDF document text
    • https://cdn.sqhk.co/norejasiwiza/ifrQlUb/6385083707.pdfIn PDF document text
    • http://csxmoney.info/30821826543djbiv.pdfIn PDF document text
    • http://xekizarobofoza.22web.org/1847243007.pdfIn PDF document text
    • https://cdn.sqhk.co/guzelatolina/hijg2ih/nodobanepomujujusuta.pdfIn PDF document text
    • http://toworugesolur.getenjoyment.net/gebeloxuxebujazubip.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/vjeAjeU/home_based_assembly_jobs_uk.pdfIn PDF document text
    • http://italywow.pro/wii_u_error_code_103_1401tp5cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374951/normal_60074388457fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_5fcca983e2b13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451752/normal_6048d6ef29b4b.pdfIn PDF document text
    • http://wowovamofuzo.sportsontheweb.net/afro_asian_literature_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nojebimit/Goehihd/red_star_sunglasses_amazon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mipuvofelope.epizy.com/pidupuwawipadireduje.pdfIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_1ed01773ccc54c81ba459d31faadc6cf.pdf?index=trueIn PDF document text
    • https://17c3d818-7f64-4152-976a-2fa997d7a7be.filesusr.com/ugd/e2c250_0825a05ced50491c9f69d25edb5a8489.pdf?index=trueIn PDF document text
    • https://8ed7b8cb-9bae-4def-ad9b-66b28cd11f91.filesusr.com/ugd/740d8c_8c1e77a84c5640d99529f09830c65769.pdf?index=trueIn PDF document text
    • http://timarofata.epizy.com/chemistry_hsc_past_papers.pdfIn PDF document text
    • https://6680615c-3592-42a6-94f3-b98e474b5330.filesusr.com/ugd/252546_e56b7d645a2c46879e3cee3b19d3949c.pdf?index=trueIn PDF document text
    • https://655b5f2c-2f45-4411-b579-7e5bd587bf3d.filesusr.com/ugd/2a272b_4e991a86396248949d95303ebaf9d489.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_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 5516 bytes
SHA-256: 043c599b560cfada63cfd53f313289d1d69a031e53c19afe9efa5e1dddf6f05e
font_01_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 10604 bytes
SHA-256: 57c7d0c73da8f2d8c85f8af7f154d2a7bf61122ac07f6616292c777b4cbc0de8

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