Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a59fe4dc2b947a…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 14:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51b47275e4706c7f1a527f24794e28d6 SHA-1: b0ad62127b676b6fa26206c4c4a85fe884524617 SHA-256: a3a59fe4dc2b947a7c6156a60054fb6c1b58d433557d24aa1bf3e5c69c5dae6b
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large quantity of external links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=candy+pdf+luke+davies'. The document body contains garbled text but includes the same redirector URL, suggesting an attempt to lure users to malicious content through a deceptive link.

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.cc/pify?keyword=candy+pdf+luke+davies
    • http://files.bakersbirdshop.com/uploads/1/3/1/6/131606756/3c0fb4a0.pdf
    • http://files.rootsboutique.shop/uploads/1/3/0/7/130776027/juraxezuzaf_xatitari_bimezafajolusaw.pdf
    • http://files.honeycombloom.co.uk/uploads/1/3/2/6/132682913/jizituzisuwexiwaliko.pdf
    • http://xuvumezel.gladewaterathleticbearbooster.club/uploads/1/3/0/7/130739654/bafizijobavasizad.pdf
    • http://files.aikenkraft.com/uploads/1/3/1/3/131397971/tagiduxoxam-bukedikato.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/92242667820.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4743/files/xevulir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/polumiporanejamitamugi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1515/files/kodivitobifeladoxofiki.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/89925775150.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/convert_to_form_fillable_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5353/files/61652196641.pdf
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/semavefenakaziz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/architectural_engineering_and_design_management.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_off00007054.bin
ec399770270b0c777ed02c7a1c3a1119affd14e2e7940c299a32301bfcebac78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7054 5072 bytes
font_01_sfnt_off000081bd.bin
6a86fe9f7b82f370657e5fa322d5b724fe14ecf0341d981ad57ce186d3d38b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 10316 bytes

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