Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9a5c0f7bc0b1f1…

MALICIOUS

PDF

186.6 KB Created: 2021-03-04 02:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a7fc052b8bc4a75d1da6c647daca1072 SHA-1: 0105fdef873dc1fbac04a46fb434b42ccca2e929 SHA-256: 1d9a5c0f7bc0b1f10adf6b5adba3a2879af1cdbea09a7f5f647122d4944244cf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely to trick users into visiting a malicious site. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of multiple external URLs suggests a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure and embedded URIs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/123?utm_term=texas+instruments+ti+82+games PDF link annotation
    • https://cdn.sqhk.co/kulamogo/rgciegf/eggplant_boats_with_sausage.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/cngcugc/degikipopamisarefitet.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/hahewhj/55636111807.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/ijru5ig/giwosazamajaxipukadowi.pdfIn PDF document text
    • http://bnl-jobs.com/woniremuzajolopenufbpk.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/oracle_sql_certification_worth_it.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/7266721691.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/rUtjhgj/true_surf_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5fd7d018240e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_601cbaa82e224.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/OhcMcha/idle_landmark_tycoon_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_601de5e762785.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/Xiegfvf/26807640925.pdfIn PDF document text
    • https://cdn.sqhk.co/musezikuzapi/difhapH/53734649766.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zupitatip.atwebpages.com/weider_ultimate_body_works_vs_weider_total_bodyworks_5000.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000233c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x233C1 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off00024476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24476 11344 bytes
SHA-256: 20340fab08218209815fe07d18a516e82a521753452c8b5c949ee019e287dbbc
font_02_sfnt_off000269da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x269DA 5316 bytes
SHA-256: 0bc0ca245293fe109db9f4e0334b26c347476ba38d583f7d7233560364106980
font_03_sfnt_off00027bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27BD6 23468 bytes
SHA-256: d0211277ec1041d6a0d11e0f5ae0f6ee9bf073a29a4af9556d8186d00ea1e0a2
font_04_sfnt_off0002c2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2C9 17072 bytes
SHA-256: bf729bcd9e0742e13915bad9893e86faae650bfd93fd602d1710926b2bdf9041

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