Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27750595d543ec3…

MALICIOUS

PDF

45.1 KB Created: 2021-05-17 00:32:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7bd618235c46206018269a3bb7db4e07 SHA-1: bc8b33d11aff539fef54d7740e4d47ece40da71f SHA-256: b27750595d543ec3a52359d2826fd01583a5ca427b3775c096638a5730b9c515
220 Risk Score

Malware Insights

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

This PDF document employs a lure related to free game currency and hacks, directing users to external links. Several heuristics indicate malicious redirector infrastructure and a link farm strategy, suggesting the primary goal is to drive traffic to potentially harmful content. The document body and embedded links contain numerous URLs pointing to game-related cheats and generators, which are likely pretexts for delivering malware or engaging in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/how-to-get-free-spins-on-coin-master-android-game-hack In PDF document text
    • http://safwafurniture.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-vip-hack_GM406889139.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_003_off00004b1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1E 24836 bytes
SHA-256: 5590374773502e3f9d1ba23e73f3a420845ffbc79ed9705817c0ecade53811a1
font_01_sfnt_off00008421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8421 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD3 18224 bytes
SHA-256: e75a85775560c8380404af7b38c0f71a56f3669257afdef98786fb98fd154819

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