PDF malware analysis — malicious · 7da46f4b9ea8e98e

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 13:34:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: ce478dd1136a923656d3b39297f8f5e3 SHA-1: 82b2497e946730c8e9a8553d75210665fb8d0f02 SHA-256: 7da46f4b9ea8e98e36c34db65aac651f353733f70fb604a9652d291d75e9fb61

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The document contains numerous links to external PDFs and a redirector URL, indicating a link farm designed to funnel users to potentially malicious content. No scripts were extracted, but the presence of multiple malicious redirector links and SEO-based PDF lures strongly suggests a phishing or malware distribution campaign.

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/free-spins-on-coin-master-link-game-hack In PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spin-app-apk_GM406889139.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_off000049df.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49DF	24764 bytes
SHA-256: `2002cc7cd3b7f2c7383c1511f9c2cd9c6cbd803a1d6400d52c644edcddc19e81`
`font_01_sfnt_off0000829f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x829F	18056 bytes
SHA-256: `892ebf3b86ae534fd3f474e2c239da2a9bb4dc91f8225dc09222a78aadec1336`

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