Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a165ab79ecb212…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 20:31:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1c3b2f57506ec1ab73d4073ae94bfcac SHA-1: ad1619dc9a0ac0e07f34794226231be7827d4099 SHA-256: a3a165ab79ecb21227bae30d2878cb9e35b75126819029912e2053d7707632cf
160 Risk Score

Malware Insights

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

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'free generator' or 'game hack'. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document's content and embedded links strongly suggest a social engineering tactic to drive traffic to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-level-7-executor-free-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/the-laughing-unicorn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-glack-wings-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-roblox-codes-october-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/meep-city-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/grab-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/bhop-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/best-roblox-free-hacks-exploits_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/cool-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-free-spin-app-iphone_GM406889139.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
font_00_sfnt_off00002f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4C 22624 bytes
SHA-256: c34dd86da46cd689ea3849793201008eacbe187ab3c585ce667fa5fcf9d3f0a1
font_01_sfnt_off000061fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 19064 bytes
SHA-256: 8347ce13634ddbd27ba979c84086087d3a88b9c8765a8c07117342963aebb222