Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6e6960eacb6a59…

MALICIOUS

PDF

75.8 KB Created: 2021-02-10 23:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ee410892bd0270449f727ed2cea50ea1 SHA-1: 4bbc1ad403d6fb87ac3e2deef8194d1d01cdeed0 SHA-256: 2d6e6960eacb6a590ef4c5c1455f47aad4c72c15d3425759bba8ccb89f2e934e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing campaign. The document body, though heavily obfuscated, appears to relate to pharmacy renewal, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=wyoming+board+of+pharmacy+renewal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369643/normal_602071333f899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402247/normal_6019799f55238.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/8k1gehb/725237548.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/gcOvheJ/falling_down_stairs_dream_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_601d054c937e0.pdfIn PDF document text
    • http://kotodagojaf.iblogger.org/15590582578.pdfIn PDF document text
    • https://cdn.sqhk.co/fokapalo/gmiaibA/from_sea_to_shining_sea_idiom_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/gwuhfjb/green_neon_wallpaper_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/1AHihif/dotatumusabona.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5fc6b5c9b8b01.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ghcfAQI/facebook_stock_news_after_hours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462986/normal_5ff26d6084bf7.pdfIn PDF document text
    • https://cdn.sqhk.co/zokelofid/rgcG7KA/mobidif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494429/normal_5ffe922b5af66.pdfIn PDF document text
    • https://cdn.sqhk.co/wovedajuraki/hfgfhbN/ruwekotozirebugafunikafu.pdfIn PDF document text
    • https://cdn.sqhk.co/penutizufib/hj7qkgh/tinder_lite_apkpure.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://zezazemana.epizy.com/62111087970.pdfIn PDF document text
    • http://gamemogap.epizy.com/coreldraw_x4_full.pdfIn PDF document text
    • http://vujesidewu.rf.gd/que_es_la_acetilcolina.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_off0000dbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 5448 bytes
SHA-256: 8ec9aa1fcc2860e8d75d3caa72e915fc9000a1a99f5918eba7eef76843d8fc6c
font_01_sfnt_off0000ee48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE48 10980 bytes
SHA-256: 2872b41ea7f74a263db87e53604e1ed9c16492fdd67b0fc4d31b2254e98a3bef
font_02_sfnt_off000113de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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