Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f2c52e391f8270…

MALICIOUS

PDF

43.0 KB Created: 2021-05-18 02:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 06e011aa33fa1e7b14bf3dce6fc8bc02 SHA-1: a9f2970a41c84751b3839c1c20969ee7cb61d233 SHA-256: 44f2c52e391f8270011bb529e7d5e70cdc037a74724e235e4c5a5ddfd8586e32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and known malicious infrastructure, disguised as offers for free game currency or hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-with-no-verification-game-hack In PDF document text
    • http://cdescolapios.org/images/robux-generator_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://cdescolapios.org/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://cdescolapios.org/images/roblox-demon_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://cdescolapios.org/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://cdescolapios.org/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://cdescolapios.org/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://cdescolapios.org/images/oprewards-free-robux_GM431946152.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DC 25412 bytes
SHA-256: b7b2b6b5fe8fc5fdff53263e5c8a6dc8d5dd9ec7a787df50453bf1c4746c1472
font_01_sfnt_off000083b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B4 18964 bytes
SHA-256: 882e97bebd076dae688415b0184bb224dca7d5b64082a0b27c077a0c76cfc979

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