Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58b549947ebe435…

MALICIOUS

PDF

51.8 KB Created: 2020-08-15 08:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 430db060d12c6a9b912a76e4d7a42eab SHA-1: 6bebef1384abdb401ea2a855f619e2fa45e2cbe3 SHA-256: e58b549947ebe435ef2748514298118e786ac49e770f995485ba8eb0f01b7a75
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to disabling Android data usage warnings and includes the primary malicious URL. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links, likely for phishing or malware delivery.

Heuristics 3

  • 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.
  • 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://ttraff.ru/pify?keyword=desactivar+advertencia+de+uso+de+datos+android
    • http://files.tyjministries.com/uploads/1/3/1/4/131482881/pedijutaruzike-fikovegu-kilox-kesafetamixa.pdf
    • http://files.chisholmjohn.com/uploads/1/3/1/0/131070786/murenofalixi-filamasibesinog.pdf
    • http://files.chisholmjohn.com/uploads/1/3/1/0/131070786/murenofalixi-filamas
    • https://cdn.shopify.com/s/files/1/0436/9793/0393/files/mr_probz_waves_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/pirafebaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/3579680308.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/dejobikavujuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9653/files/lesigotifirupit.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/mufoji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/misopasofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/fugoxefasezabebodogow.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/xemikexixiserulu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006704.bin
8d13a0e8f12a416ea5748db88947fe949a5bc8111c711ed36ed61af17be5e273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 4840 bytes
font_01_sfnt_off00007787.bin
e6b9271acefd5948099c8cc32d38b973428b79a5f1e0b161dc01ef581ce6f823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7787 11340 bytes
font_02_sfnt_off00009cca.bin
5da86263fc98456d79684462ef7a6deaba705b79be1e3eb9a09fd40802d53099		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCA 16140 bytes
font_03_sfnt_off0000b1b8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B8 4324 bytes

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