Malicious PDF — malware analysis report

Static analysis result for SHA-256 c530383c1f6da774…

MALICIOUS

PDF

42.6 KB Created: 2020-08-17 13:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cad0168d0e7575029e402bd858f1de2 SHA-1: 8742376875cf48ea758d6350908f95b1bcb92f1f SHA-256: c530383c1f6da77457f04f35ed0df436f9e1c81d8aff5070958bcf448a42b94d
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=clasificacion+de+tratados+internacionales+pdf, which is likely used to direct users to a malicious site. Another heuristic indicates a PDF link farm, with https://cdn.shopify.com/s/files/1/0435/8881/2959/files/65790930486.pdf being the first URL in that farm. The document body contains obfuscated text and the malicious URL.

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=clasificacion+de+tratados+internacionales+pdf
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdf
    • http://sozinolam.gmgtravel.com/uploads/1/3/1/6/131606739/7182181.pdf
    • https://cdn.shopify.com/s/files/1/0435/8881/2959/files/65790930486.pdf
    • https://cdn.shopify.com/s/files/1/0436/8033/3989/files/kagezozexarosuzutob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/add_extension_to_chrome_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/7186/3961/files/los_angeles_sightseeing_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/20346093162.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/avila_spain_tourist_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/bosch_serie_4_varioperfect_manual_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/5564/4823/files/xabalamupowiwikifitol.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/42956291797.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/37899907783.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_off00006613.bin
58c03a1750e11f05ad985af8db03d842145241dd72e01e939b27b9f3e4d954e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6613 5052 bytes
font_01_sfnt_off00007747.bin
443b8330e638b887e3ce861fcf751f1f96bd74ea3464b4ce99c6144391d80303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 11188 bytes

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