Malicious PDF — malware analysis report

Static analysis result for SHA-256 2221ae7ff150e245…

MALICIOUS

PDF

51.3 KB Created: 2020-08-31 07:14:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd4385899fe696f7086116cacc75f869 SHA-1: c341e85bcc803e251990d02429acc7507be102d8 SHA-256: 2221ae7ff150e245adb411a325647070a6123008254c871db75c3e4ee90044eb
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/wix?keyword=real+estate+study+guide+california
    • https://static.usrfiles.com/ugd/3f80ec_a3f8cab66a714fe0b93e1dbb638aa5bb.pdf
    • https://static.usrfiles.com/ugd/b5472a_aa5cb401a065447d99fa4d33c69a04ed.pdf
    • https://static.usrfiles.com/ugd/09273f_ba373f5bff7641fe8c8129660728546a.pdf
    • https://cdn.shopify.com/s/files/1/0436/6280/3097/files/36899846111.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/for_each_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9063/files/amd_phenom_ii_x4_black_edition.pdf
    • https://cdn.shopify.com/s/files/1/0443/0535/0812/files/62608026553.pdf
    • https://cdn.shopify.com/s/files/1/0464/7855/7352/files/57309708514.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/auditoria_informatica_gonzalo_alonso_rivas.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9968/files/2009_volkswagen_routan_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/62323247878.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/sujitalejobasewitoku.pdf
    • https://static.usrfiles.com/ugd/be19e1_99d5c70e4a0e4f04918f300b6f7ea269.pdf
    • https://static.usrfiles.com/ugd/b8c837_d558dee8f9be4cbfb843ce2cdba29e34.pdf
    • https://static.usrfiles.com/ugd/b8c837_23ab0980297443a1909110a7b0a5402f.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/
    • https://static.usrfiles.com/ugd/09273f_b

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cd1.bin
cffe16ce60d33ed8a3e5447f2211bd399e7ca4dee75df48da7d79e97d2cad344
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 5180 bytes
font_01_sfnt_off00008e87.bin
3e122b16a5073c623cd2c44f188bfac2abd4e78388074036c89ca2082c6f7616
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E87 10260 bytes
font_02_sfnt_off0000b191.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB191 4324 bytes