Malicious PDF — malware analysis report

Static analysis result for SHA-256 1213c81657768d34…

MALICIOUS

PDF

47.7 KB Created: 2021-05-19 08:04:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 925c2e893839b787d2b15467a9d3d6f6 SHA-1: d5b288f22656dec2ca2b85d51851585ac977367c SHA-256: 1213c81657768d34da688e54db0a24863b198aabb8fe0fc36286bce065937198
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious websites offering game hacks and cheats. The presence of a 'download button' heuristic further suggests a deceptive user interaction. While no scripts were directly extracted, the PDF structure and extensive external links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-hacks-no-downloading-game-hack PDF link annotation
    • http://elektrofahrspass.de/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/robux-in_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-pvp-hacks_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC4 27684 bytes
SHA-256: 4a7281935c670dbcc7e065c3bec54c87d7ddbf08b4b4d2c60095c25ba9b72036
font_01_sfnt_off00008d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D68 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00009709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 18584 bytes
SHA-256: 7478f31c8577c6ab88e720a63aa35b1352af97e65bb114ce556c39ffd62b7789

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