Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c32fe5b6a3ffc5…

MALICIOUS

PDF

46.7 KB Created: 2020-08-22 14:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3013f3f6bed010ccc9a8ffdbca367e6 SHA-1: 8e6d830037bac0ff6669233b326173cd43787f7f SHA-256: 59c32fe5b6a3ffc580820017bfd045bf93b8bb16acfd147691159cec51739103
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains references to the target URL and instructions to disable security software, indicating a social engineering attempt to bypass defenses. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=catia+v5+r21++installation
    • http://files.trackside.org/uploads/1/3/2/7/132740637/simage_wumopirakazif.pdf
    • http://jabozob.thepathtoawakening.net/uploads/1/3/1/6/131606727/b47b042.pdf
    • http://files.multifamilyatlanta.com/uploads/1/3/1/3/131383698/zujonufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/80478677024.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/11017047882.pdf
    • https://cdn.shopify.com/s/files/1/0433/7749/2118/files/budismo_principios.pdf
    • https://cdn.shopify.com/s/files/1/0432/0663/9779/files/13265445472.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/dymo_labelwriter_450_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/10217319349.pdf
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/asahikawa_city_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/nunemafatixanuxid.pdf
    • https://cdn.shopify.com/s/files/1/0462/1592/1818/files/excel_expense_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4000/5541/files/a_level_economics_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/architects_in_chennai.pdf
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/79621154810.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/52613387963.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/tadigokola.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_off00006bdc.bin
aef65eba3bc583543ab4c88edac51935f7b50ef317b23959fd5ac66d67226238
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDC 4740 bytes
font_01_sfnt_off00007c06.bin
3dad109d5bd3dcba60beb02501506501461e3203b46dd677dca60f5d3565b25e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C06 10408 bytes
font_02_sfnt_off00009fac.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAC 4324 bytes