PDF malware analysis — malicious · 0e44854d752d0639

MALICIOUS

PDF

45.3 KB Created: 2021-05-19 22:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: aba716dc37fc5391149dcd8a69a34986 SHA-1: 7b6b5bee61bc397323ec5386d8f471bbf720ddab SHA-256: 0e44854d752d06398779e916fe7c8588c850aff451f50d5d76f7cc0b64e54d30

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts a large number of links to other PDF documents, likely part of a link farm or SEO manipulation scheme. The document body contains obfuscated text and references to the redirector URL, reinforcing the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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/431946152/roblox-hack-com-game-hack In PDF document text
- http://www.exikom.com.ua/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
- http://www.exikom.com.ua/images/free-coin-master-links_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
- http://www.exikom.com.ua/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- http://www.exikom.com.ua/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- http://www.exikom.com.ua/images/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
- http://www.exikom.com.ua/images/coin-master-spin-hack-app_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
`stream_003_off0000468e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x468E	26368 bytes
SHA-256: `b726d44b8ffa4466b99e0e3c7897cb3d7873e7f739f465d1b73fad93cddce222`
`font_01_sfnt_off00008442.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8442	2888 bytes
SHA-256: `dcdd98ee8e25436a83587ccb4027347dd2c3fcec95f3413942edd4086125bcca`
`font_02_sfnt_off00008e16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E16	18440 bytes
SHA-256: `92e56247950081f5f8ea935637ec6d93dafa31aa334148af106ab9a8365bd2e0`

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