Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2a560c87aebc2a…

MALICIOUS

PDF

49.4 KB Created: 2020-08-19 11:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b57f17e2f14e7d5e6b0498d87a4d037e SHA-1: 89df2b783b01b0b90dcdd69cb4957789d090a327 SHA-256: de2a560c87aebc2a44d46b33cc1737f5abfd8cc8bd3375f810a94687ef1f446b
148 Risk Score

Malware Insights

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

The PDF file contains a lure impersonating a cloud document sharing service, indicated by the 'SE_CLOUD_DOC_LURE' heuristic and the document body text. It also features a 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic pointing to 'https://ttraff.cc/pify?keyword=cannot+open+google+drive+on+android', suggesting the user is redirected to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of embedded links, with 'https://cdn.shopify.com/s/files/1/0433/9286/0327/files/jozez.pdf' being the first identified in this farm.

Heuristics 5

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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=cannot+open+google+drive+on+android
    • http://files.coopshalftime.net/uploads/1/3/1/1/131164100/kofubemojodiduxumuda.pdf
    • http://files.saintpaulstrong.org/uploads/1/3/1/4/131454373/7819212.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/jozez.pdf
    • https://cdn.shopify.com/s/files/1/0436/1699/3440/files/dna_structure_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/4858/1782/files/73753171783.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/nemizosetove.pdf
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/avolites_quartz_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/66986667457.pdf
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/secret_of_the_solstice.pdf
    • https://cdn.shopify.com/s/files/1/0434/3562/2552/files/8459680855.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/bhagavad_gita_chapter_11_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/lukodavitibed.pdf
    • https://cdn.shopify.com/s/files/1/0431/8425/9231/files/car_alternator.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_off00006f56.bin
52801165a8e2937652ea79dc1462f58a3bb6c47ec23d2f8aa61bcc748aeec81c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F56 4916 bytes
font_01_sfnt_off00008028.bin
83182eccf4fca9fa249b641fed792c0edb5192ba3e959b01cd637571ce78d21b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8028 10528 bytes
font_02_sfnt_off0000a349.bin
2e2dbd8d40f44e1da00b7f18e1398173a4086b41d4ddf32f7cc12e009e373e5f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA349 16140 bytes