Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f4e55d5d2cf7ce…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 02:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8d52c5678d0396a848ea5f6ef6affd SHA-1: 0006dc746b1ef5961bc69a9c71cebfb7e2ada2c0 SHA-256: d3f4e55d5d2cf7ce7d3427b36f341a234c2d8cecdc0d3d4398d1971b4f94c302
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified is 'https://ttraff.com/wix?keyword=claptrap+rescue+missions', which is flagged as a malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document. The presence of numerous links points towards a phishing or malware distribution attempt.

Heuristics 3

  • 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.
  • 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/wix?keyword=claptrap+rescue+missions
    • https://static.usrfiles.com/ugd/ddb60a_a00c6a6b878047b6be49536c2bfe0909.pdf
    • https://static.usrfiles.com/ugd/253000_2bc93008d40f44bf90e5172082bbdf93.pdf
    • https://static.usrfiles.com/ugd/b8c837_115eaea699644f26a15e37c619cc6644.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb7f2479483b46509ae1b8bf42284415.pdf
    • https://cdn.shopify.com/s/files/1/0438/3490/0642/files/48814413212.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/special_strength_training_manual_for_coaches.pdf
    • https://cdn.shopify.com/s/files/1/0434/2661/1356/files/adobe_3d_export_to_step.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/dumej.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/is_there_an_end_to_cookie_clicker.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/vizifojiluladewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/wujipisubo.pdf
    • https://static.usrfiles.com/ugd/6290de_1ed5152a05b64c80852f7a121dc8bbed.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eed99d82ee74410ab42ccda4f97eaf5.pdf
    • https://static.usrfiles.com/ugd/30e015_dc4238cecf09417d8d281c3a47644c73.pdf
    • https://static.usrfiles.com/ugd/80c1db_83f17a353e314ade80bca55c5a4c4dde.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca669c5e18164dc7b1772e1030984331.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_off00005f6f.bin
3c33a3821eb8851c23fded06de5c153872931e6bf52280a664ffb98559073bd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6F 4984 bytes
font_01_sfnt_off0000704a.bin
c2b10aeee1e7dd2784a084fc4b100c9956c8c47b1302f67c4673486af0fcb553
pdf-font-stream PDF embedded font (sfnt) at offset 0x704A 10156 bytes
font_02_sfnt_off00009308.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9308 4324 bytes