Malicious PDF — malware analysis report

Static analysis result for SHA-256 f729e1667733fe80…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 18:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94eae2fc6bd8e8ecf68e77117916c63c SHA-1: 2ac9e4b214eeb3267b7dda2ce134ef77b3dcae2a SHA-256: f729e1667733fe805031d4b3c407421d39a51771c2b8d0e24b5a86b4d92788cb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with the primary malicious link directing to a redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=programming+tutorial+c+pdf, which is a known malicious redirector. This suggests the document is designed to lure users to malicious infrastructure under the guise of providing a programming tutorial.

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.com/pify?keyword=programming+tutorial+c+pdf
    • http://files.petaciraolo.com/uploads/1/3/0/7/130739919/4935dee838e.pdf
    • http://files.laurasmithauthor.com/uploads/1/3/0/8/130874012/zatexuxede.pdf
    • http://files.buttonandspoon.ie/uploads/1/3/0/7/130775825/getofizoj.pdf
    • https://cdn.shopify.com/s/files/1/0449/2584/5659/files/logitech_x_530_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/luxomivumofoni.pdf
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/manusia_sebagai_khalifah_di_bumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/suvupa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/guniva.pdf
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/88983700825.pdf
    • https://cdn.shopify.com/s/files/1/0452/0011/3813/files/meditation_piano_accompaniment_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/54781911402.pdf
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/selfitis_behaviour_scale.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/buzuxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3422/1466/files/70655190974.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/nuwave_induction_cooktop.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006084.bin
8ca72b6356ecabfdb3cc2e68c354a17936d19449e45ea4918239061c406d11a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 5296 bytes
font_01_sfnt_off0000726c.bin
e28f86140a5214726f9f4b6f249f9cd49ff017103f692ab99bb1ea167fb60c80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 10588 bytes

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