Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65a4b2960d82050…

MALICIOUS

PDF

49.3 KB Created: 2020-08-07 21:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 359433847aa9079836533db23a84ea75 SHA-1: bfa97f6d4db40a6242d3e2cb3ff73a59dfaadfaf SHA-256: d65a4b2960d82050ac17bd8e99bb4930143c6f2af93eed42ac7db4e83d913de0
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to `ttraff.cc`. This URL is presented with a lure related to a 'child immunization card pdf'. The file also contains a PDF link farm heuristic, with multiple links hosted on `cdn.shopify.com`. The document body, though heavily obfuscated, contains the same redirector URL. No scripts were extracted from this sample.

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.cc/pify?keyword=child+immunization+card+pdf
    • http://files.danielzlatkin.com/uploads/1/3/0/9/130969356/56609cfacc95e5f.pdf
    • http://files.ptcolormarket.com/uploads/1/3/0/7/130776211/3985201.pdf
    • http://files.freedominchristchurch.org/uploads/1/3/2/6/132696044/4954588.pdf
    • http://files.simplydivinesuds.com/uploads/1/3/1/4/131407812/23f3d849.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/kevin_gates_islah_album_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/xolumiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6911/files/63897105007.pdf
    • https://cdn.shopify.com/s/files/1/0433/6120/6422/files/residential_lease_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/pumerulokasumaxunetakumul.pdf
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/tomulak.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/waluxesaseru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/88587896225.pdf
    • https://cdn.shopify.com/s/files/1/0428/2200/8988/files/annotate_secured.pdf
    • https://cdn.shopify.com/s/files/1/0433/4944/2715/files/adele_someone_like_you_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/searching_and_sorting_algorithms_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0438/4292/8790/files/jereposu.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_off000074d9.bin
d0ddbbd2345a1590fcd9729e0e4f2133b27e2a1439472475bb5f21ee54da9cc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D9 5056 bytes
font_01_sfnt_off000085e2.bin
35864e3f247bf211026a4e7c8be899e1f350f0202d57552fc17f6fed810296c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 10536 bytes
font_02_sfnt_off0000a9db.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9DB 4324 bytes