Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ef71fd438f5798…

MALICIOUS

PDF

81.5 KB Created: 2021-04-05 00:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3b556a8ffba8f5b8af26bff45cb8c5b SHA-1: efab8a785148b000710cfc1d7eada3506f608706 SHA-256: d0ef71fd438f579848af0f3aa12d0396a5ffdeac2bb971a7069a2e0e4bb3413b
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that masquerades as search results for 'quietest air rifles 2020', likely to trick the user into visiting a malicious site. ClamAV and ML classifiers strongly indicate maliciousness, with the PDF_URI heuristic pointing to a suspicious domain. No scripts were extracted, but the overall structure and embedded URI suggest a phishing or malware distribution attempt.

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://maypoin.ru/wix?keyword=quietest+air+rifles+2020
    • https://cdn.sqhk.co/pananumujo/igAiehc/6674427225.pdf
    • http://instgrmmverifiedbadge.com/68181659616wm28c.pdf
    • http://smartradiobf.ru/89157013195x8bai.pdf
    • https://cdn.sqhk.co/tororukiwuri/jigdyjd/video_editor_for_youtube_salary.pdf
    • https://cdn.sqhk.co/xeviremal/KfjgKhb/xatibukarenimuzukewufow.pdf
    • https://cdn.sqhk.co/riragimi/hfYghD4/happy_meal_app.pdf
    • https://cdn.sqhk.co/zisazege/2MmJjcr/10929961135.pdf
    • http://negozio50sconto.info/symantec_dlp_guide_15fcik6.pdf
    • https://cdn.sqhk.co/xarozowuzosa/iniangj/watch_now_nasa_earth_from_space_hdvr.pdf
    • https://cdn.sqhk.co/sixepatexup/Ib7p7hi/avatar_factory_2.pdf
    • http://kurs1.xyz/samsung_s9_price_in_dollarsvvxsv.pdf
    • http://uscarinsurance.info/motorola_xts5000_stubby_antennacwvyc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/womirofop/93282266758.pdf
    • http://fopajika.epizy.com/what_sheets_fit_arms_reach_co_sleeper.pdf
    • https://s3.amazonaws.com/mojivikapeti/82864991374.pdf
    • https://7054f9d6-44ea-4b6c-8535-0d04e7cb9957.filesusr.com/ugd/963b03_ff20abb94f0248c9b8fa5053083b7546.pdf?index=true
    • http://zotijoxamofos.epizy.com/51062817252.pdf
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_5d99fbdff0b64053b2baee0ee5601598.pdf?index=true
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_8e4f6c9e891147ad99456eed3bed1c75.pdf?index=true
    • https://s3.amazonaws.com/bisute/xoneb.pdf
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_8b389c67041d4bb48910b96a772d8b16.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010206.bin
8e97342405dc48617dd58e4b813a7c7c7312e808a12769146d046b5e039ea104
pdf-font-stream PDF embedded font (sfnt) at offset 0x10206 5096 bytes
font_01_sfnt_off00011366.bin
017364ee5390047a6485272a6ad6c1b5b80ecb538f07848ba494f5f7619b4ce9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11366 11280 bytes