PDF malware analysis — malicious · de36ae24a4d8c71e

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 04:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 44f5220ec5d255d0b1e048a39ac80e6a SHA-1: 32771f382170ba703d819dafa32aec6b8d223111 SHA-256: de36ae24a4d8c71eb10cf1ef887b981a18f9dd8b1d6482d247169215b2d36ae1

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document contains multiple embedded links, one of which is identified as a malicious redirector leading to a "game hack" lure. The document body, though partially corrupted, also contains URLs related to free game currency and hacks. The presence of a "ClickFix" heuristic suggests the document may instruct users to manually execute commands, further indicating a social engineering attempt to trick users into visiting malicious sites or downloading further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.
ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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-minecraft-for-free-on-android-device-game-hack In PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-picture_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/more-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/robux-match_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-app-real_GM431946152.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.

Filename	Kind	Source	Size
`stream_003_off00004e2c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E2C	24440 bytes
SHA-256: `cdeb9bf7c49d02ba9b90933b448f8b10572da590f2fc680c45184984c773b9bc`
`font_01_sfnt_off000085bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85BC	18332 bytes
SHA-256: `f1b1885292fe7804ab1139a421bc8971dcdb5c33ccbea204e48355468ca4790a`

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