Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f668b69007e6af…

MALICIOUS

PDF

35.0 KB Created: 2020-08-28 16:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e84a600c5a23a7d12ab77a1b813d9594 SHA-1: 967476fa8182411236b7688fbfea9b78769af236 SHA-256: 20f668b69007e6afaf97c13ced5f1f8d4d75615ca8a2d5aa05400a877ad3b29d
130 Risk Score

Malware Insights

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

The PDF file contains a prominent link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure for downloading content, likely to deliver a payload. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on cdn.shopify.com, which is a common tactic for SEO poisoning to drive traffic to malicious sites.

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=super+baby+food+pdf+download
    • http://zokoni.khaolakdivecenter.com/uploads/1/3/1/4/131437736/0d161.pdf
    • http://files.uncbearsvolleyball.com/uploads/1/3/0/7/130775519/xulefiv-xizewamotoze.pdf
    • http://files.bstpierrecollection.com/uploads/1/3/0/7/130776423/8317410.pdf
    • http://files.biggsbassethounds.com/uploads/1/3/1/8/131857071/84fb7a2093dbc.pdf
    • http://tiwiwof.tiadaghtonvalleyrr.com/uploads/1/3/0/7/130775778/3612400.pdf
    • https://cdn.shopify.com/s/files/1/0439/2730/6408/files/lijudi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/rikur.pdf
    • https://cdn.shopify.com/s/files/1/0450/6681/3590/files/banting_food_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/72527815698.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/yu_yu_hakusho_seasons.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/kibadot.pdf
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/mopinelojigipefixozuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/88987925705.pdf
    • https://cdn.shopify.com/s/files/1/0464/8088/3880/files/up_apartment_ownership_act_2010.pdf
    • https://cdn.shopify.com/s/files/1/0439/7599/9646/files/alumno_definicion_pedagogica.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_off00004b1c.bin
5846c021d83a2e528dc4ed62150c33b5b3ac5658801c07fc5b4ebfd5f255826d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1C 5292 bytes
font_01_sfnt_off00005d3f.bin
6eb407a0b1d43dfa26664f6f63d6036463547a3f37f93a1a2b63a8d2e27bfe95
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3F 9996 bytes