Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c20bde1207a853c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-14 13:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cfdef0d763e9082ad8cdfa62d329510 SHA-1: 19ce102112bb8cbfcd69eda8e888062dfa3c264a SHA-256: 9c20bde1207a853cd903115dff08e8b316fe8a08fc2ba7b2b7da2bd7071ec796
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com'. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=gymnocalycium+horstii+cactus+guide', suggesting a lure to a malicious site. The presence of numerous external links, including the malicious redirector, indicates an attempt to drive traffic to potentially harmful destinations.

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=gymnocalycium+horstii+cactus+guide
    • http://files.radiusannex.com/uploads/1/3/1/4/131407138/4344878.pdf
    • http://files.simplypairedcatering.com/uploads/1/3/0/8/130814475/sadagep_fifure_gekot_darawaxivadej.pdf
    • http://wavoxu.cachepa.org/uploads/1/3/1/3/131379578/0d469bd3307.pdf
    • http://files.creeksidesupplyinc.com/uploads/1/3/0/7/130776324/towamivuvamu_wizojigatan_rasazi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/budabu.pdf
    • https://cdn.shopify.com/s/files/1/0448/4576/0669/files/pasila.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/amharic_typing_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0445/9646/1732/files/97801636860.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/pelonekilifa.pdf
    • https://cdn.shopify.com/s/files/1/0436/9406/3770/files/50359807855.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/mighty_mouse_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/xirokipilor.pdf
    • https://cdn.shopify.com/s/files/1/0430/2258/1923/files/62389535479.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/amphotericin_b_package_insert.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/41071030279.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/80577663871.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/vaxiduriganefinijulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7073/5014/files/97856086000.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_off0000688a.bin
925321b51009894c1140f40c638b54f3bcb81bb06a1a18ffc8fb5f1fb7b4bb9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688A 5488 bytes
font_01_sfnt_off00007b01.bin
53c61eebfb91dc91d291a5acd39a36b2de4ac8e5663c662119cf720104ed1d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B01 12012 bytes

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