Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0d442273d72422…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 01:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 206bc4fa0572a01fed3bc050f475825e SHA-1: 24749e289e4f5c0d547df6235dc9a7f0334a175d SHA-256: 9c0d442273d72422c16472d02d07874e4066900965998ce355c63c38d8ead023
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=emulator+android+untuk+linux+mint'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains embedded URLs and suggests a social engineering lure to install a browser extension or update, which is a common method for malware delivery or credential theft.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=emulator+android+untuk+linux+mint
    • http://files.dgcustomart.com/uploads/1/3/1/4/131414134/fe4ebb7a8286.pdf
    • http://files.njmstudio.com/uploads/1/3/1/4/131437834/6042026.pdf
    • http://womepiju.waimariehvcroquet.org/uploads/1/3/0/9/130969426/kumobaxad.pdf
    • http://files.spiritualcoffee.ca/uploads/1/3/1/3/131398288/tibijinerufupa.pdf
    • http://xabizedux.ready4success.com.au/uploads/1/3/1/0/131070374/witisem-kunol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5741/3270/files/nafup.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/english_grammar_tense_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/48353060791.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/bufupegozewadapogewukaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/public_relations_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevuwuvufotolotatagonisex.pdf
    • https://cdn.shopify.com/s/files/1/0436/7902/3257/files/succession_planning_in_family_business.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/34804896640.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_off00006dec.bin
41f08818accde47ad77928888260706de76894da2fae2c90dd2fb1362aff52bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEC 4880 bytes
font_01_sfnt_off00007e68.bin
fe6d28527630723f48ef82bc01402a8a402cf3e7d067a542e0805144dd43e929
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E68 10520 bytes