Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1a2351d1d733d5…

MALICIOUS

PDF

36.9 KB Created: 2021-05-12 11:12:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ccf8ef644b45e878912dd584520ab09a SHA-1: 9ed074104deafbbbcadf6b8137858abfef43d8c7 SHA-256: 0f1a2351d1d733d5b1eb6c9684c9f2b5b454354595864e344291d98b0cd305a3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. This indicates the document's primary purpose is to trick users into visiting a malicious site, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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.
  • 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/479516143/minecraft-creative-mode-free-game-hack In PDF document text
    • https://code.giftcards.comIn 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
stream_003_off0000372c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x372C 25036 bytes
SHA-256: cd17e325672f899d80c8af44ee7f1d24b4e6d3512ab004158bdbc37c1a44c33d
font_01_sfnt_off00006fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB1 18000 bytes
SHA-256: f6a8cbfed7e544a7ed90cd1995fc8c45102f25219f8fae40911eda120a1a4630

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