PDF malware analysis — malicious · 73cc8b00aa5a6045

MALICIOUS

PDF

38.6 KB Created: 2021-05-21 04:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 8a60b036fb5707a9c64f4a1bf07e3dbd SHA-1: 95824f97c411b740e1a0247e972d0c2c3aeb85ec SHA-256: 73cc8b00aa5a6045771a835505834b8acc5c44fd9544c29b7453ed233d5ff25b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as game hacks and generators, which are designed to trick users into downloading further malicious content. The document body explicitly mentions 'How To Get A Free Minecraft Account' and includes a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, reinforcing the lure. While no scripts were directly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack aimed at delivering a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.8060

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/479516143/how-to-get-a-free-minecraft-account-game-hack In PDF document text
- https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000034fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34FE	24728 bytes
SHA-256: `0085911e8abf6ad91fa280caf48f24126edc77dddc46d4bb4be666a1f4378653`
`font_01_sfnt_off00006c5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C5C	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00007646.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7646	18016 bytes
SHA-256: `5a2a7e753a917a0c0776144ed208a5331958d262d8364954408ce80ee198d92a`

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