Malicious PDF — malware analysis report

Static analysis result for SHA-256 046f9ca2ac789307…

MALICIOUS

PDF

51.8 KB Created: 2021-05-18 01:31:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bfadd0309553679d5c9457fd7406d9e7 SHA-1: 0e4f9d6632c5ea29aa8ed16a1f941a30f9fa7830 SHA-256: 046f9ca2ac789307464d19deda6dc023bf667c1a03121d81d8942820a4e65b36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures, specifically targeting users interested in game-related cheats and generators. The primary lure, 'Roblox Generator Com', directs users to a URL associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/roblox-generator-com-game-hack In PDF document text
    • http://algierimasonry.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/link-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b77.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B77 29216 bytes
SHA-256: 2d83d312accbca28823e49697d53ffce0f627658b5b9c1fde54846beca3707cd
font_01_sfnt_off00008e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 3964 bytes
SHA-256: f6b9a386ee4e0aff622a98b2230905da71eab0ca98398cb52018fda3528d3e2a
font_02_sfnt_off00009bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 3396 bytes
SHA-256: e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee
font_03_sfnt_off0000a7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7AA 18376 bytes
SHA-256: f82f7cd631513f9855343e536b8ab499af2fdb27f4ce1349c9137e16bc695ffd

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