PDF malware analysis — malicious · 5ce24d6ed0b32e2b

MALICIOUS

PDF

42.7 KB Created: 2021-05-14 00:40:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: e4d61b51ffa387b1138f01f686666e0b SHA-1: bf26568dbb71fe0a1b42c395ac01a3a8260e7c39 SHA-256: 5ce24d6ed0b32e2bd66d1dc583f612e22bfa1aaf2ad1d1f8a97b28d7152484ea

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, promising free game items or hacks. The primary link directs to a known malicious redirector infrastructure. The document body and heuristics indicate a scam or phishing attempt, likely to lead to further malicious content or malware downloads.

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/coin-master-free-spins-and-coins-generator-game-hack In PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/roblox-cp_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/minecraft-kill-aura_GM479516143.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_off00004c28.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C28	25104 bytes
SHA-256: `a27d61e64d7898778f021e66460b485df2211b10026cb799db4028ce474ef6e8`
`font_01_sfnt_off00008524.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8524	18060 bytes
SHA-256: `5c936a158300bd644bf61cf1c4473900143af4d81ccb33b35f9f120089ba0cae`

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