Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7bbd8a71adb26f…

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 15:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afb288b3ae2826b87ab55c968bb44056 SHA-1: 59d10d9c43141099e0806ee09cab2a5932108777 SHA-256: aa7bbd8a71adb26f76b0dbcd12b4dd9e645c27766c57486587ebee43ea824af8
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text referencing 'Swarm robotics ppt' and includes the malicious URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=swarm+robotics+ppt
    • http://files.180degreefinancialcoaching.com/uploads/1/3/0/9/130969744/d6ced7.pdf
    • http://pozere.purrfectfriendsforadoption.org/uploads/1/3/1/1/131164572/881304.pdf
    • http://files.elitehometeamllc.com/uploads/1/3/2/6/132682335/dc4fe4e3c777983.pdf
    • http://rapisujan.passivehabits.com/uploads/1/3/2/3/132302720/ab76593.pdf
    • http://rajiwadul.oxfordcountyhouseclearance.co.uk/uploads/1/3/1/4/131408738/9057ce316ba.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/63911481556.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/5461661307.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/10335555071.pdf
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/formal_dress_sydney_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/vunisinuderibomusowus.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/benham_park.pdf
    • https://cdn.shopify.com/s/files/1/0452/6043/9713/files/convertir_de_a_word_editable_sin_perder_formato_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0443/0397/4556/files/platform_film_ka_gana_bhejo_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/74984954533.pdf
    • https://cdn.shopify.com/s/files/1/0430/3201/9097/files/jametisejesijofabenenasax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6282/7935/files/tefexikasixewasaxenejal.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_off0000663a.bin
66c679210dbdbda0211f4676ffdc2a3c1f5ea67f979c5a50208fe168a726f9f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 5384 bytes
font_01_sfnt_off00007876.bin
658f2413f23c77a0114354810f469030167e10f706152cb65cdcca60c32ad69a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 9780 bytes

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