Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b2982b16815395…

MALICIOUS

PDF

46.4 KB Created: 2021-05-31 08:11:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3f2cc0a46b60d577c154ab2028cd0954 SHA-1: fa409525af2ea07fc54a31b2f740ff7b3e2f3bd4 SHA-256: 26b2982b16815395c9124772f9a69355ca237188d3383398f3731ea646372101
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure related to game hacks and free currency, directing users to a malicious URL. This URL is identified as a malicious redirector, indicating an attempt to lead the user to a malicious site. The document body and heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9449

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-juwelen-hack-mad-paintball-game-hack In PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/hack-robux_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://acode.com.br/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000056a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56A0 24836 bytes
SHA-256: 5f9740a6305bc5ca2124396fb838a0bdaaec07237fb348fde60a308576aeda68
font_01_sfnt_off00008f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3A 19400 bytes
SHA-256: 52b7d28c5e0ac2257017e9beb191ae074caba76d079c216bdbc43c95c6139aca