Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4b8756ff346ae0…

MALICIOUS

PDF

68.7 KB Created: 2020-08-03 10:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92847784e25acccb27a7fcd7f8c0f291 SHA-1: 58965ace180418633dc5a0b08d331813462fa848 SHA-256: 1a4b8756ff346ae0fe238e7728406f53dd6ed323663161a6cb14b2d0379605b4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'One Piece' and a URL that appears to be part of a link farm designed to manipulate search engine results. This suggests a social engineering attack aiming to drive traffic to malicious sites.

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=one+piece+volume+1+pdf
    • http://files.marnimigrealestate.com/uploads/1/3/1/6/131606407/9825398.pdf
    • http://files.canolfaniaithbrogwaun.com/uploads/1/3/2/6/132695714/gopevulu.pdf
    • http://files.shunsart.com/uploads/1/3/2/6/132695216/bozovufiruvige-dixub-jirodur-tomonixalan.pdf
    • http://files.frufruandfeathers.com/uploads/1/3/1/4/131453215/xajifoxevikekibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/dolezawujigijagukima.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/guzerekisijux.pdf
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/vodurowifozuzodugodabaken.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/82923683827.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16949815227.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/cartoon_guide_to_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/61064486203.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/wurakumivadodadupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/keep_screen_on_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/seraga.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/rusubikumobipafidazuriz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/36499091287.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090bd.bin
f2a66e0f131b99fb9214f1d630b3892317f0c37415226e8b2463e0ffeeb410cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x90BD 15844 bytes
font_01_sfnt_off0000c396.bin
5f67ebe434d26f61dd034d9f945dce12cd71396a54fca9b5b78833c61dd19e4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC396 4956 bytes
font_02_sfnt_off0000d476.bin
2950a4765c7c8e482e36615f997a7ddf456bfdfb3ba43d8ccb09db6f2cd00b09
pdf-font-stream PDF embedded font (sfnt) at offset 0xD476 15816 bytes