Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e86f90afeed2468…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 18:43:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2956a9048b91bf5d09c225a0693ccf2e SHA-1: 4abaa93670fd5730606c9464d7af0a8427e3ea76 SHA-256: 0e86f90afeed24684864ab012d73850ca267b98fe6b1951fadb95042c65ce21f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be free game hacks or generators. The primary link redirects through malicious infrastructure, and many other links point to PDF files hosted on projectunionstreet.com, suggesting a link farm or content aggregation for malicious purposes. The document body itself contains the lure text and embedded URLs, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-on-mobile-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/rexima-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pokemon-go-free-150_GM1094591345.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/ulgames-resources-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/ships-free-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-tool-exe_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.

FilenameKindSourceSize
font_00_sfnt_off00003116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3116 22356 bytes
SHA-256: d3484986a3aa416e8dddfefd3b9a6e359e9f257647516c9489ffa58d17161c31
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 19372 bytes
SHA-256: 5331e3b47e1eecd1b1cb57ee2f3545b8b8fbb1b10f6e158321778d87dfa25569

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