Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6a2fdc3a0d0d42…

MALICIOUS

PDF

51.0 KB Created: 2020-08-03 19:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 562e090e5d403a96e1093d2db97253b5 SHA-1: baf3f61e9ec009c94c199a0b01f4fd694effe935 SHA-256: 3d6a2fdc3a0d0d42ee60443d788cab7ecc86bb1ba6b13171d86013541b2e6b94
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.ru'. The document body appears to be obfuscated or corrupted, but the presence of numerous links strongly suggests a phishing or redirection attempt. No scripts were extracted from this sample.

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/wb?keyword=homotopy%20analysis%20method%20in%20nonlinear%20differential%20equations%20shijun%20liao%20pdf
    • http://files.karenchickfineart.com/uploads/1/3/2/7/132712355/nugasu_linofomowidofut.pdf
    • http://files.wholeypiebatman.com/uploads/1/3/1/4/131437249/dofoguzakeni.pdf
    • http://files.donedberg.com/uploads/1/3/1/4/131407148/598f6c25b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81858120772.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/258073209.pdf
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/yahoo_notepad_login.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/3835864190.pdf
    • https://cdn.shopify.com/s/files/1/0433/5999/4014/files/pusunufaxejenagivex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/53867843668.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/gipilodevenunuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/39605336658.pdf
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/83427267397.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/wekipukomorozugove.pdf
    • https://cdn.shopify.com/s/files/1/0432/4134/1092/files/23436207802.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/xirivurikuvax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3212/4312/files/pafetugapuzobeso.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/rip_music_from_youtube.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_off000071b5.bin
572414c3261cdb768be531089625829d46c134f16c9c6aaa4f7f8199c2846370
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B5 5548 bytes
font_01_sfnt_off00008469.bin
056b6f7cd2e94f6d8659f7cb0e54af2878cb5af09b5f8b65e423db174533eb2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8469 10616 bytes
font_02_sfnt_off0000a8ef.bin
2c73253ca21ed5f89f2fad103dae046e306b28b88f3eacfa22178dbe970dfe77
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EF 16144 bytes