Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd53bf3629f5ff7…

MALICIOUS

PDF

33.4 KB Created: 2021-06-18 00:44:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d8173bd5ac3d3df1195f4ab65c7a80bd SHA-1: 7219df68972c5a9c99859c32b32366924ed6c40b SHA-256: ddd53bf3629f5ff7b871ea48ccc40ffb87fcb1fd774f1f28de3ab03014e40553
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, disguised as 'game hacks' and 'free generators' for popular games. The primary lure directs users to 'netcdn.co', which is associated with malicious redirector infrastructure. The document body and embedded URLs suggest a phishing attempt to trick users into downloading potentially malicious files.

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/fly-hack-roblox-lumber-tycoon-2-game-hack In PDF document text
    • http://dana1157.com/images/free-robux-2021august_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-ios-and-pc_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/pokemon-go-free-coins-generator_GM1094591345.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/i-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/cheat-teleportation-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/is-tiktok-free-to-use_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
font_00_sfnt_off00002e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1E 21308 bytes
SHA-256: 5aad817c266056094d57e881cbd59fbf10310c2f752c9f38bae57f087697292f
font_01_sfnt_off00005c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 19340 bytes
SHA-256: 91eacfc52c09dd889d8d65753eb6e5e60ef78c84c00e702698031ef96d1669f2