Malicious PDF — malware analysis report

Static analysis result for SHA-256 af169d616e45b765…

MALICIOUS

PDF

69.0 KB Created: 2020-08-05 03:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfd02ba167e1ef6972280aaf1151e029 SHA-1: df2f87b6d163da7b936393dc2ffa425ab146f685 SHA-256: af169d616e45b765ab00153330fc502bfd3146b97ddf98453e5a79d09735290d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that is disguised as a download button. This link, 'https://ttraff.cc/pify?keyword=important+days+list+pdf+download', leads to known malicious infrastructure. The document also contains a large number of links to PDFs hosted on Shopify, likely as part of an SEO link farm to improve search engine ranking for malicious content. The presence of a visual download button further supports the lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=important+days+list+pdf+download
    • http://files.machinerysolutionsgroup.com/uploads/1/3/1/3/131379382/e2428bd25a36d.pdf
    • http://files.hanmaumchurchdfw.com/uploads/1/3/2/7/132712006/dajufetikolejodoboje.pdf
    • http://files.katemasley.com/uploads/1/3/1/1/131163615/turamomapivoker.pdf
    • http://pilajemow.mk-meats.com/uploads/1/3/1/4/131437246/1b8f5b42e06.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/45121248709.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/37472025381.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/college_algebra_gustafson_11th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/5059499969.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/fupujaxovo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8615/files/20088834214.pdf
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/advertising_agency_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/kugamovuxafef.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/xuritakirixufutumoxanep.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9654/files/pibut.pdf
    • https://cdn.shopify.com/s/files/1/0438/5495/4656/files/student_council_president_speech.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/88952565055.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_off0000d1c2.bin
29c6f6ffa434c395879bf6b281ffee7cf29d64cb5a1c8614ad8f38d7048c0bf8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C2 5320 bytes
font_01_sfnt_off0000e3d7.bin
e5e371513d3c10bc02eae6410d6773a5df67ce311e9fccce992abb966646aa2d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 10184 bytes