Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2e295e5c12283d…

MALICIOUS

PDF

59.1 KB Created: 2020-10-16 13:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ab8f67a54bbf18a78f461620d093aa19 SHA-1: cbe685e6dd76b48a76457ddf049e6aface79c79c SHA-256: 3e2e295e5c12283d2f26c5a72e7f97a0afa1eb1adba03460f728677c537ba2cc
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL designed to exploit keywords like 'mtg arena daily rewards'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to trick users into clicking it for a fake reward.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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://cctraff.ru/strik?keyword=mtg+arena+daily+rewards In PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/7735552.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5f87a9beedf48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f8708aaf1d47.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/8cc3c9ae-3c8d-4d0c-a3c0-2760934a2d5d/malutexaponakijiwoduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9d3f1c-a5e0-4f80-972e-20495060bc35/vavipiruvewujadifufovav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd63e6e-3261-40cf-a8b7-ab63743befd0/gakivaretipizigosoruru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95783211-f1e9-4e9d-989d-7e81d5df5a24/revokuzifiwikemene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0605/3533/files/operating_system_concepts_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2919/1066/files/zuxuwosikajovimonawoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9254/4162/files/orlando_furioso_primo_canto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7262/5058/files/19506538185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5168/2454/files/samsung_clothes_dryer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3295/9912/files/93069012014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2140/0745/files/prayer_point_for_financial_breakthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4732/0214/files/price_is_right_games_you_can_play_at_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9831/6196/files/how_to_make_wax_melts_with_soy_wax.pdfIn 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_off0000ad99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD99 5192 bytes
SHA-256: 7ff470c020bede43dfda6949497ff6b9b80829377013cd7d00a39f480b9e5bc0
font_01_sfnt_off0000bf67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF67 14756 bytes
SHA-256: 7ae8b4cb15dbaca4f2a4832d910c311060e164f13df8eb3ff1f86ecb44eb8288

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