Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbba0e1fefc0c3cb…

MALICIOUS

PDF

38.9 KB Created: 2020-08-15 02:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34753e676449bbfca84eb12060b61144 SHA-1: c7f967b5a906886e2fcb0216c93cadf490cf40ac SHA-256: bbba0e1fefc0c3cba9a963c909583a8e6b76ac868dce74fac5a2bf37339730b3
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bollyshare.com movies' and a URL pointing to 'ttraff.ru', suggesting a lure for potentially pirated content. The presence of a 'download button' heuristic further supports the social engineering aspect of this 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.ru/pify?keyword=bollyshare.+com+movies
    • http://gapelile.cbcmtg.org/uploads/1/3/1/4/131438464/rulavuzeruxe.pdf
    • http://files.glamserved.com/uploads/1/3/1/6/131606262/5728776.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/historia_de_la_bandera_de_panama_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xasojikunu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/plant_anatomy_and_physiology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/97182862067.pdf
    • https://cdn.shopify.com/s/files/1/0439/4188/8155/files/bifuxosotanibinibivekakex.pdf
    • https://cdn.shopify.com/s/files/1/0448/0348/9954/files/bestself_co._the_self_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/51218266364.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33647917740.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38664456414.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_off00005b05.bin
a106ae15b623d12af57716ac929a15df969fb25d7640631d37a8133c1d2fefc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B05 5284 bytes
font_01_sfnt_off00006ce2.bin
57545d3bddb014146c8009b7a4bc2f9cd7be976a3d4af7e4ceebd764310087f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE2 10136 bytes

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