Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ae0550c106e231…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 08:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e5fc2e92979662e9b0cfef077a26c05 SHA-1: 1625961ec9082f5c91d35d5c67468c4e2cd467d4 SHA-256: c9ae0550c106e2311accc670076c27c28fcda4e8346e9859adbd7c8890ec69d1
140 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a primary link identified as a malicious redirector. The document body and heuristics indicate an impersonation of a document signing service (like Adobe Sign or DocuSign) to trick users into clicking the malicious link. The primary malicious URL is 'https://ttraff.com/pify?keyword=sign+adobe+pdf+on+iphone', which likely leads to further malicious content or phishing pages.

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.
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • 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=sign+adobe+pdf+on+iphone
    • http://files.puzzlesandbraingames.com/uploads/1/3/0/7/130739472/pubuviwodo.pdf
    • http://files.boldcupofcoffee.com/uploads/1/3/1/3/131384214/jofezefun-rejagatavunij.pdf
    • http://files.calicoastco.com/uploads/1/3/0/8/130814227/75157.pdf
    • http://files.honmoto.com/uploads/1/3/0/7/130776298/3b04858e05c642.pdf
    • http://dagajuse.sadielansdale.com/uploads/1/3/1/3/131398140/83e17f9a47.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/hazardous_waste_management_rules.pdf
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/peanut_butter_making_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/32222491683.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/vowenufi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6277/8264/files/agenda_2020_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/91048879247.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/56023079037.pdf
    • https://cdn.shopify.com/s/files/1/0430/7179/9449/files/18254145143.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/kebadibunurumafifubikukum.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/mods_para_minecraft_1._8._3.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/ledukokakazodas.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/walabapofudupelasipabu.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_off000063b0.bin
1e7bc76a235db26fcc18f5a8d185e34812608410b4dbd5bc8fd25d9a3a28599e
pdf-font-stream PDF embedded font (sfnt) at offset 0x63B0 5240 bytes
font_01_sfnt_off00007577.bin
f0077ad70d811b27302b7a7507e1ecb123283ae0307d042360636d9e572f3ff7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7577 10112 bytes