Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef8560082377cb8…

MALICIOUS

PDF

162.3 KB Created: 2021-03-29 23:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9de9d4b3137b649e5f3254a8a1977b39 SHA-1: 596223c671716b019d740437cc7b8394fff69194 SHA-256: eef8560082377cb84aa77aeaf39ff41363eeba8926629adf1764e48aaf0583f5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://lozipotod.ru/aws?utm_term=sherlock+holmes+book+1+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387922/normal_6021440d7911a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427273/normal_606193403a48e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5fc85fb3ef46e.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hjtji5k/23955870111.pdfIn PDF document text
    • http://edayafar.xyz/16808541315j5dhh.pdfIn PDF document text
    • http://kernig.store/chain_chronicle_apk_jpzu292.pdfIn PDF document text
    • http://tomogorman.com/phonemic_awareness_strategies_for_second_gradeintsu.pdfIn PDF document text
    • http://1offpark.xyz/fanatoentyy.pdfIn PDF document text
    • http://baranaydin.org/kulekzwawn.pdfIn PDF document text
    • http://pumba-timon.space/all_full_form_of_computer_in_englishjqnpc.pdfIn PDF document text
    • http://runolive.com/saxinemvwoqg.pdfIn PDF document text
    • https://cdn.sqhk.co/lidumezuvir/b4gjhfh/99163863030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fea04ab94b32.pdfIn PDF document text
    • http://salestore.pro/xodekugojanufulesidufudpdv8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446496/normal_601b6d7586148.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/how_to_pair_bluetooth_onn_headphones.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/ib_english_language_and_literature_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/5336707815.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/99399421734.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/27106491117.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/42269834061.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/cabinet_ministers_of_tamil_nadu_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/dazebitomo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21B6F 5544 bytes
SHA-256: 79502fe836a935dfb19da342f164ad1849a69f8fa5d5635b5f22cd132f3cee15
font_01_sfnt_off00022e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E21 23632 bytes
SHA-256: 6f6201f7b2c82f834b77e6ed763e952a5ce688c53982565c1509202d32231b3b
font_02_sfnt_off00026638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26638 16076 bytes
SHA-256: dff47068f1bd978806843bd80d9a996d908e133fe499d3008303af98cc1e9342

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