Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8cd22da40db2171…

MALICIOUS

PDF

72.8 KB Created: 2021-02-19 22:23:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1ac85bd29df0cfc9af2ea3e3cea7eac3 SHA-1: ce4a2c0841c4804855fa20a515cc2c9b72c9415c SHA-256: a8cd22da40db2171dd30fafca8b5ba8d102e1a07325fbda43b9760d6703fab9b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to contain keywords related to location search, suggesting a lure to trick users into visiting the malicious URL.

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://jottigo.ru/wix?keyword=laceyville+pa+18623 PDF link annotation
    • https://cdn.sqhk.co/kusewupudin/ja2hiql/dead_city_game_hit_zone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488572/normal_5fe80f1aa4c43.pdfIn PDF document text
    • http://ctuxuu.com/487418717poqhx.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/fQ1QeCN/pamasuwas.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/fNTqjih/lily_run_3d_endless_runner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411489/normal_5fea1860a87da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446380/normal_6022c61f0c382.pdfIn PDF document text
    • http://milanomodaitaly.site/xagadagqdnn8.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/gKsicQe/rally_coupons_big_buford.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/hhbHsjj/88936451767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492892/normal_6010c45b3af2e.pdfIn PDF document text
    • http://mists.space/download_joox_for_laptopxlzgo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425912/normal_6003f53c62263.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
    • https://s3.amazonaws.com/wonumafubij/android_9_vs_8.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/49738650495.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/breastfeeding_formal_wear.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_off0000d361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD361 4944 bytes
SHA-256: ba8b3d9f809b6f9a888be3ba7356baeed669d0f5a45d8c49d186e081a302f877
font_01_sfnt_off0000e435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE435 10456 bytes
SHA-256: 20d4e84ce505fa59e8911deac3076f5113b1f01e5e9175ae7bef87a562fa2967
font_02_sfnt_off00010806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10806 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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