Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4ed9129ad6ea43…

MALICIOUS

PDF

75.6 KB Created: 2020-12-27 00:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 79896391e4d9fdc31468f5bc559cdaaa SHA-1: 7771b7b3bfd0d96f652df99b625375b38757098a SHA-256: fe4ed9129ad6ea43282568653cd953ba1fddf42ec6c60587c903ea5a666e5c0b
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with several pointing to known malicious redirectors and link farms. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a strong intent to redirect users to external, potentially harmful content. The document body, though heavily obfuscated, contains references to 'grand truck simulator 2 mod apk latest version', suggesting a lure for software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/strik?utm_term=grand+truck+simulator+2+mod+apk+latest+version In PDF document text
    • https://latabiwot.weebly.com/uploads/1/3/4/6/134612911/3639518.pdfIn PDF document text
    • https://zibozofos.weebly.com/uploads/1/3/4/8/134896422/b164118586aa.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/biiejew/classic_games_arcade_emulator_apk.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/renoduzezobeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f92b2fb2628a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378405/normal_5fe210402f609.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/je8bjis/sonny_acres_farm_haunted_hayride.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/68233a85-e63e-4d76-ab83-06539f5cb682/1153077288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0f2be8f-5126-48fa-8071-2a47b8873451/ropimutefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb37096-4364-40dc-907c-9754e7df2960/28308834342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a7e4fd-5fa2-4143-881c-12b97d0fa5f9/naruto_shippuden_episode_14_english_dubbed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba881ffb-5bc5-41ce-99e9-d56d143b04e4/2020_murder_mystery_2_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca91dd6a-3fb5-4958-99f6-dcbc37984329/rizokinapudukixasol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d2fd1d-2a6d-452c-a647-a16c1d154863/gubenaneniterugosidewi.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_off0000e6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A6 5504 bytes
SHA-256: 18521abca26572d76af9c8ce94805574b6d13b750b1db063e58544e16cb0501e
font_01_sfnt_off0000f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95C 11220 bytes
SHA-256: 5894c1730f722ce5ff79698bec2ba9e61c9644bec5d7b91ab9ea5c46253e7df6

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