Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba123053c10f1f93…

MALICIOUS

PDF

49.8 KB Created: 2020-07-31 06:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76be1c35e3533da068a00783d5ff7e21 SHA-1: 381bd4a8078ba8eb9d6fffefc911597dec45588b SHA-256: ba123053c10f1f938d7cfbff4551c18e5304c4aff8d45b11426e6d0856504332
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, with one heuristic specifically identifying it as a 'PDF_MALICIOUS_REDIRECTOR_LINK' pointing to 'ttraff.com'. Another heuristic flags it as a 'PDF_SEO_LINK_FARM', indicating a mass of external links, with 'cdn.shopify.com' being a dominant host. The document body is heavily obfuscated and unreadable, but the presence of these link farms suggests an attempt to lure users 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.com/pify?keyword=english+paragraph+writing+examples+pdf
    • http://files.theworkwithsarahmaya.com/uploads/1/3/1/0/131071114/3f52f2.pdf
    • http://files.carterrod.com/uploads/1/3/1/1/131163836/a76fafc2fd.pdf
    • http://files.3fishproductions.com/uploads/1/3/0/9/130969775/fiveduw.pdf
    • http://files.dayesoutdoors.ca/uploads/1/3/1/6/131606016/ff126ca5411be8.pdf
    • http://files.theincomesnowball.com/uploads/1/3/1/4/131407668/476269.pdf
    • http://files.dayesoutdoors
    • https://cdn.shopify.com/s/files/1/0434/5459/5225/files/39290696554.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8663/files/nowugeworikobokilawodoxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/81271391348.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/mujasizetuzuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2332/files/83492306079.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/57861561743.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/todidadirukazunubinex.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2289/files/vuxemazibuzax.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/41553428215.pdf
    • https://cdn.shopify.com/s/files/1/0436/3960/3360/files/94071615056.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_off00007cbf.bin
511cbf5e19e426fc5b038ec352a4b206a143c725ffd5786229caa0bc0fc5c051
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBF 5248 bytes
font_01_sfnt_off00008e73.bin
ec9af9ef8c9eac5fe5ed73b9997d79b963cc310dd67da44551dc0af385ac02e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E73 1600 bytes
font_02_sfnt_off0000968c.bin
1319067342a0c2c2792cac16dc7f4ffc6afbbe67bd52c1e173f29286fbc2b00f
pdf-font-stream PDF embedded font (sfnt) at offset 0x968C 10396 bytes