Malicious PDF — malware analysis report

Static analysis result for SHA-256 b17ff9b48c045644…

MALICIOUS

PDF

49.0 KB Created: 2021-06-10 17:51:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 19b36c510439098712e821faf523fad9 SHA-1: a2a7e227d4b48bed8411a8814f95567741f65584 SHA-256: b17ff9b48c045644e3f2022eb455cf385faca3129e19eef6db6854e8783bd8ba
160 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to known malicious redirectors, specifically designed to lure users into clicking on what appears to be a game hack or generator. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which likely leads to a further stage of infection or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/roblox-free-hair-codes-game-hack In PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/robux-redeem-codes-hack_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/robloxian-roblox-hack_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-robux-generator-survey_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/acually-working-robux-hack_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-roblox-accounts-with-bc-list_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/get-free-robux-pastebincom_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-toy-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-apk-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox-on-ipod_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-royale-high-school-diamond-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-robux-with-code_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/how-to-hack-a-youtuber-on-roblox_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-robux-no-downloads-no-surveys-2021_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-royale-high-cheats-for-diamonds-2021-on-xbox-one_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-hack-tool-robux_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-clothing-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-admin-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000542d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x542D 26404 bytes
SHA-256: f41ed9c10490546948fafd13ac5c1a431e7a7631e4bb60c627b0b6eb66812390
font_01_sfnt_off00008faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C52 18472 bytes
SHA-256: 0c34ab104977070915151016e24e35187f8354093682c5401cbbc3770fde4f5e

Open this report in the interactive analyzer, or submit your own file for analysis.