Malicious PDF — malware analysis report

Static analysis result for SHA-256 118ec72b8e589679…

MALICIOUS

PDF

38.6 KB Created: 2021-05-11 20:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f9785d4cf66cbda479a8cf832588f935 SHA-1: 22f7fc25cce18ce6118e25a48ae82c60775a7bac SHA-256: 118ec72b8e589679219bd121e713deac9cafd8374c35a78e80e81a513d2281c3
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links designed to lure users into clicking on what appear to be game hacks or free generator sites. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded links strongly suggest a social engineering tactic to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/free-robux-without-verification-or-survey-game-hack In PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/instant-robux_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004866.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4866 25024 bytes
SHA-256: eb4e0388f9639b14fca35a39609136efbbf506940a20b23006bb6e10200fce5f

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