PDF malware analysis — malicious · 2f4f743762e613b8

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 09:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: c285472e1063483c52946918d366b93f SHA-1: e24c4e6ba205779f6cb4313108966f562ffa87fc SHA-256: 2f4f743762e613b88caa1423b369bcdb2f3bff55d3c131eb3fd482655bd442a9

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. It contains multiple links to known malicious redirectors and a large number of SEO-optimized PDF links, likely intended to drive traffic to malicious sites. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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.
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/hack-version-of-coin-master-apk-download-game-hack In PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-games-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-coin-spin_GM406889139.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-robux-no-verification-at-all_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_off00004cbe.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CBE	24180 bytes
SHA-256: `a69c863d85b988e7fac98b983fbac73fe8171a5dbf16f8b5e576c12c30f70367`
`font_01_sfnt_off000083fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83FD	18608 bytes
SHA-256: `5b95fa97962658a3e629e8357bf81639977ca58617958822feb21fc523d607ab`

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