Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d29ea28a733c4c…

MALICIOUS

PDF

38.6 KB Created: 2020-08-19 23:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f54d2a9caaec07e5132cd7aa07c68d6a SHA-1: d858f50049612d61c3a8ddbb157e9a9036083111 SHA-256: 33d29ea28a733c4c995fe1107ff4deb7e3db9244c59507fc3178dc3cad0d45e6
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Facebook messenger for nokia e63' and includes a critical heuristic firing for a malicious redirector link. This link, 'https://ttraff.cc/pify?keyword=facebook+messenger++for+nokia+e63', is likely intended to redirect the user to a malicious site. The presence of a PDF link farm further suggests a malicious intent to distribute links, potentially for phishing or malware distribution. No scripts were extracted, but the combination of the lure and the malicious redirector strongly indicates a phishing or social engineering attack.

Heuristics 4

  • 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.
  • 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://ttraff.cc/pify?keyword=facebook+messenger++for+nokia+e63
    • http://muwaresaf.texaspoliticaljobs.com/uploads/1/3/0/9/130969723/sifitozasaxalaxu.pdf
    • http://diwutasab.ketowithgrace.com/uploads/1/3/0/7/130740465/jotibojaduj-misotuzaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/herramientas_de_almacenamiento_en_la_nube.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/header_file_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/dozasipineporazafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/similar_sounding_words_with_different_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/82216674543.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/gomedenixokuneju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/mowidagowifeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/worekunezibunodavag.pdf
    • https://cdn.shopify.com/s/files/1/0439/9408/7582/files/rasisipopife.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_off00005862.bin
a70048ebe5051b8688e8cc96f403a0c461abc5c0e59c008599ce2ad377f57f01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5862 5644 bytes
font_01_sfnt_off00006b83.bin
89819643a06dc604e3f455cf83f7290a6be3c6df393917cddfe87fa2a9161df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B83 10060 bytes

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