Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e546967e319e41…

MALICIOUS

PDF

38.7 KB Created: 2021-05-24 19:01:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 90254cf4538dd7adfdefd5283dd094d5 SHA-1: 0a79f46ea9e17a8bb41163bf6cf8e6e8fc791bf7 SHA-256: c7e546967e319e41b1b94982095f68a0a1312e730e7431dc784489010efd4773
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link that redirects to a malicious URL, disguised as a 'free generator / game hack'. This lure is reinforced by the document body text, which explicitly mentions 'How To Get Free Robux 2021 Easy' and includes a call to action to access a 'Roblox Generator'. The presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely leading to a malware download or further malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

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/431946152/how-to-get-free-robux-2021-easy-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002a7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7D 25648 bytes
SHA-256: 84d4bbfa6ba24915a171de96d2fcc0c18df6df4e7d0fda66d5f87f95a4451f13
font_01_sfnt_off000065d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 4008 bytes
SHA-256: 515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593
font_02_sfnt_off0000735d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735D 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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