Malicious PDF — malware analysis report

Static analysis result for SHA-256 508933d8d113ce2e…

MALICIOUS

PDF

41.4 KB Created: 2020-08-28 23:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b758176ae19bfc304d73897703b37a2 SHA-1: 67545a4ba87721f9ed8d34dfed2540e3e726669d SHA-256: 508933d8d113ce2e5f3755f3045aa941d854255546c22a9ed55cf9607962dba0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains numerous links, with one heuristic identifying it as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'pokemon let's go strategy guide'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content. The presence of a large number of external links, many pointing to Shopify, suggests a link farm for SEO poisoning or traffic generation.

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/wix?keyword=pokemon+let%252527s+go+strategy+guide
    • https://static.usrfiles.com/ugd/b8c837_8c7fedc56ae14cd1a0b5a23f58cdc1f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f34ff608644465497c549119ec35bbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_98a330be0f8a412cbd134df2c0a42fea.pdf
    • https://static.usrfiles.com/ugd/b8c837_8432177643f44956bbf81b136dba065b.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/34621530855.pdf
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/actualizar_whatsapp_2018_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/0941/7127/files/1322531010.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/zalakubuxajorerurajinapap.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/mimitizunijizevadifem.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/senior_system_administrator_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/43743395956.pdf
    • https://cdn.shopify.com/s/files/1/0432/5883/9198/files/security_incident_management_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/github_issues_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/medical_biochemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/9922609598.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/god_favored_me_lyrics.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_off00006293.bin
0ad74b6058a3fd3c448eb028dd4395679fa14d3c13dbcdcbce2b3a0bfe6a8738
pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 5348 bytes
font_01_sfnt_off000074b1.bin
9cec3edf301a673ad085c260fc2788f7a96b2968f24145ffadd0f809b5d85023
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B1 10820 bytes