Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace85bb28e06a6ee…

MALICIOUS

PDF

86.2 KB Created: 2021-03-15 23:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6654c131c6d0c1ba872f2732914b9280 SHA-1: 4f7651f41f1e02c100f9d80b4f34aaddfadfdc4e SHA-256: ace85bb28e06a6ee31dbfb74ef2cddbdc2dc0669599bf91fe0bbea8799cbbabc
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 0.9997

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://xajibur.ru/award?keyword=types+of+case+study+method+pdf PDF link annotation
    • http://fudasoba.iblogger.org/jikolabi.pdfIn PDF document text
    • http://gogumojaxufibid.22web.org/20939550915.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/xeropizuwe/fivizixotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8391e6e-f6b6-4e94-b32a-4932bdca8420/what_is_the_most_famous_quote_from_romeo_and_juliet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/983e4a61-16cb-4fa5-9290-1b8f71d2e725/how_do_you_start_a_realistic_fiction_story.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/banned_books_in_india_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/whatsapp_status_video_gif.pdfIn PDF document text
    • http://nudobovedazopor.epizy.com/are_2007_volvo_xc90_expensive_to_maintain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ec5e767-83fc-4199-9608-7d89ba17bf75/life_is_life_lyrics_opus.pdfIn PDF document text
    • http://jipawivenuzinu.rf.gd/jixitum.pdfIn PDF document text
    • http://luzoputaran.rf.gd/9178817215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d271be3-04af-4880-8835-ee3763ba7e88/magnavox_sdtv_tuner_remote.pdfIn PDF document text
    • http://pegewolonu.rf.gd/how_to_print_iron_on_vinyl.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/cambridge_fce_past_papers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/dbt_skills_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/19013477746.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/amoled_wallpapers_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/what_are_the_4_personality_types.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/vafugiz.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/hammer_guide_mhw_reddit.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_off00010766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10766 5048 bytes
SHA-256: a78877a5e446e6e368ec2bd4fd59d641b46f407a5770e4d0bccc9706a23d733c
font_01_sfnt_off000118a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A2 10768 bytes
SHA-256: 6ebcd4b46ce8513c102ca355337d0a46cf0250e9de1e7e6810ba751785007747
font_02_sfnt_off00013d80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D80 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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