Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1db07e1f9ff1ad7…

MALICIOUS

PDF

50.1 KB Created: 2020-08-26 02:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3923f45c0ac41a8179a7572356f0bfde SHA-1: f3cab3194e535d70d863027e9621214ba4b7c3c1 SHA-256: a1db07e1f9ff1ad7d602ce7a58ee277736f26042275b6699839bebcbf8b78caa
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body also contains the URL 'https://ttraff.com/pify?keyword=acdsee+photo+studio+professional+2019+free', which is likely intended to trick the user into downloading potentially unwanted software. The presence of a 'Password-protected archive lure' heuristic suggests that this PDF may be a precursor to delivering a password-protected archive, a common tactic to bypass gateway security.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=acdsee+photo+studio+professional+2019+free
    • http://jevoxiji.manateeconcertband.org/uploads/1/3/1/3/131398027/1614652.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/voriwavulowumevekirob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/ripojazisamudenategulorev.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/elementary_statistics_12th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/96882240269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/73630078880.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/36034225579.pdf
    • https://cdn.shopify.com/s/files/1/0436/9196/6617/files/apple_ipad_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/20660795149.pdf
    • https://cdn.shopify.com/s/files/1/0438/9945/3608/files/28458727060.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/1001_arabian_nights_in_bengali_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/puvexe.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://cdn.shopify.com/s/files/1/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006392.bin
d584a89e1ed2075e02f2d17001586652fcb9e1fc716f5fe7499d3476e16a9448
pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 5712 bytes
font_01_sfnt_off000076f1.bin
939cea2a5ad27077726dbc4323bafc014e211bccce2de725421e09efda8a9031
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F1 11960 bytes
font_02_sfnt_off0000986f.bin
a1d6c3d8a315641cfef5b80946d54895571a0fd2d1db0195ca5d86d1531c981b
pdf-font-stream PDF embedded font (sfnt) at offset 0x986F 9956 bytes