Malicious PDF — malware analysis report

Static analysis result for SHA-256 2607707cc552f02a…

MALICIOUS

PDF

69.4 KB Created: 2020-12-31 18:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8828cac69ca3e3794c94cc92793ac7c8 SHA-1: b9cb008c0b0a5660ab47f6d0af752f6ed5bac6e3 SHA-256: 2607707cc552f02a3f26b2fc1d4e846077e9a55416a8281749bfc840d73c81ed
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'auto speedometer repair cost', aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=auto+speedometer+repair+cost PDF link annotation
    • https://cdn.sqhk.co/bifugudawesu/icjghak/snapchat_score_streak_record.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369916/normal_5fc52ea5dd56d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368751/normal_5fc942ed97bc9.pdfIn PDF document text
    • https://cdn.sqhk.co/bajilevone/jicwijq/super_runner_shop_new_york_city.pdfIn PDF document text
    • https://cdn.sqhk.co/sukurorezib/P3gfs8O/nirus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e450c0ae-2728-40f5-ad79-72b86aa85f87/17504802743.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/vajegosevopatelogikopew.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/rinojixazaxugenirivizizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371b3a15-4453-4bae-9ceb-df97aa718092/que_es_virosis_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfbc5a36-a678-494b-a055-9ecd03bf8df9/regogozizefifirilu.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/sql_server_management_format_code.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/free_birthday_cards_for_friends.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9329a397-5f3c-4939-8b12-951d1ec69e3a/top_christmas_gifts_for_her_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dccf26c7-e9e8-4bd3-a51b-4e9ff0cd78fe/mekunirumotes.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/48146245113.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C5 5176 bytes
SHA-256: ec0517812bfdd03adb1edec61076a4d7390983d09e84a0f0b052202ecca77c50
font_01_sfnt_off0000e641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE641 10148 bytes
SHA-256: b3307801824588c356ab5666fa577583703a2f6c353b5695da2ccd4fa1de81a7

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