Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8aa611848b2e87…

MALICIOUS

PDF

74.6 KB Created: 2021-03-22 22:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 28beb2cf71875dc273ba12e40f8a711b SHA-1: 257500c624f7ea83a704060d15ffe1f1e2faeb09 SHA-256: 1a8aa611848b2e8730dc0e73954fa4f9e60020291fe72ffd291c650031803cc3
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL. ClamAV and ML classifiers have identified this file as malicious, specifically a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'stages of social development'. The presence of numerous embedded URLs, including the primary suspicious one, indicates an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/award?keyword=stages+of+social+development+pdf PDF link annotation
    • https://cdn.sqhk.co/julubesaf/eviiLMt/fowarawokixegagatemu.pdfIn PDF document text
    • http://ingmijn.com/xesejigamagajojku81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482405/normal_5ffc4f8f8eb1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472481/normal_5fec061a2829d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393499/normal_5fe27070ce5fa.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/aBsgeuu/tasuvex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd64833628a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_6038f9f9df8bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456663/normal_5fe2845227210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_601f25a048c62.pdfIn PDF document text
    • http://gunekagafa.22web.org/rurufaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_6019d6207ef96.pdfIn PDF document text
    • http://freehookup.xyz/frasi_inglese_utili_per_viaggiaretwexf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485309/normal_605574e38cf4f.pdfIn PDF document text
    • https://cdn.sqhk.co/zisazege/2HijaNO/61350288304.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lewamomad.epizy.com/bible_quiz_questions_and_answers_joshua.pdfIn PDF document text
    • http://vuxawov.rf.gd/12625968836.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/77572589844.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/autobiography_of_a_face_chapter_4_summary.pdfIn PDF document text
    • http://bisiziwaros.epizy.com/kanowavos.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/beyond_the_clouds_soundtrack_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/71103318874.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_off0000e5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 5544 bytes
SHA-256: 0d5099ad6be765e69dff33708c83db106dabe3f55d6e1462d040e2ed296fcd95
font_01_sfnt_off0000f8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C9 10716 bytes
SHA-256: d87b8c66a6c5693c333f1d6d352d552335de8f277bb05aa26b887d3966a9a4f9

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