Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1b7c995ecc1c36…

MALICIOUS

PDF

63.4 KB Created: 2020-08-31 09:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f9b2f54659403bbe5b5007821dd862c SHA-1: 8c73ad34ae1196a490bbd3589ef443bd5a74d934 SHA-256: 1c1b7c995ecc1c3654eef9266cbd2fbdace66eada4bb0a18544912e92158de1b
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 Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wix?keyword=ayat+1000+dinar+latin'. The document body contains garbled text and a reference to the same redirector URL, indicating a likely attempt to lure users to malicious infrastructure.

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.com/wix?keyword=ayat+1000+dinar+latin
    • https://cdn.shopify.com/s/files/1/0429/3296/1439/files/bltouch_start_gcode.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/73450156921.pdf
    • https://cdn.shopify.com/s/files/1/0436/7443/5737/files/weight_training_techniques.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae687dded894163a8793a6b9aac9a69.pdf
    • https://static.usrfiles.com/ugd/b8c837_829bbc5a50bc4197b2ca552115d4490c.pdf
    • https://static.usrfiles.com/ugd/33ab24_a142c9b4e4134e83a415c3007b77f8aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_149928f1bd4a4ddb87ba87799a200367.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f942ffbf94a42d18c802cc273553ebc.pdf
    • https://static.usrfiles.com/ugd/d01287_80d6e50853914371886e9f0f5e30d2af.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0d3117e7e2648b78f594d0bbfa31701.pdf
    • https://static.usrfiles.com/ugd/b8c837_4cf83f491a9749a1b00babc78116eb85.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2fbf2502bc746fe86a3c4dec6c5054f.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/zesewenagifurevozibuvaluj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/my_favorite_mistake.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/12903865437.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000b674.bin
5a0039f55ca11625dbfb613506a429cdfd148cf7b8ba4c832f4cc46cd11bd73a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB674 23980 bytes
font_00_sfnt_off00007bab.bin
cdec4be8fd28d004145f9316ee41ec3890dad7a0507820e4cf72848e98116abc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 4484 bytes
font_01_sfnt_off00008ad8.bin
b489d36d089627d9364437bf874e5c1f9c2dc3df5de08ea01190daab078dceab
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 14092 bytes
font_03_sfnt_off0000e1cb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CB 4324 bytes