PDF malware analysis — malicious · 9fc2fec564cac15c

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 01:59:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 83eb25b1caeadcd2d13db24d2198d343 SHA-1: ea52a6855b29b7dbbb0ce540659e685bd3328f14 SHA-256: 9fc2fec564cac15c2439b6ba718edd44a588495eb73d2f50975af7443c6b0ea7

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be free game hacks or generators. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting the primary purpose is to redirect users to potentially harmful websites. The document body and embedded links strongly indicate a phishing or scam attempt, likely related to in-game currency or items.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

Heuristics 6

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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 http://netcdn.co/app/431946152/free-model-butterflies-roblox-game-hack In PDF document text
- https://slims.bakrie.ac.id/textbook/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-hack-a-roblox-account-no-inspect-element_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/doge-hat-roblox-free_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-get-assasin-vip-for-free-roblox_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/free-roblox-outfits-and-more_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/free-robux-live-stream-zataf-plays_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/free-boombox-roblox-item_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-without-giving-personal-info_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-from-meep-city_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/is-free-robux-generator-safe_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/earn-free-robux_GM431946152.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/simplysarc_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
`font_00_sfnt_off0000328d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x328D	22840 bytes
SHA-256: `d7a88d8701e43d42c341da455f5fc28cb41c19a9a78d0f65d0abdfe53c41fc2d`
`font_01_sfnt_off0000659c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x659C	19384 bytes
SHA-256: `9dea85c7bb50a29718132283c8a770dc145f19653338c1d4a9e2200f3bcfb2ce`

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