Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b44d5424aedcd2…

MALICIOUS

PDF

41.2 KB Created: 2020-09-06 06:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82b73d29970c9661bf38f1b556b865c1 SHA-1: a2b09be659efa1529bd35d74c95871d72b717363 SHA-256: 27b44d5424aedcd216e3c60d8369c9e320941a08d7c1e43b656593b1d8c743e3
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used to obscure malicious destinations. One of the embedded URLs, 'https://ttraff.me/pify?keyword=2face+african+queen+remix', is flagged as a known malicious redirector. The document body contains garbled text but also includes the same malicious URL and a benign-looking PDF URL, suggesting a lure or obfuscation tactic. No scripts were extracted from this sample.

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.me/pify?keyword=2face+african+queen+remix
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/5825950641.pdf
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/assessment_tools_for_students_with_learning_disabilities.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/e6_9c_a8_e8_96_af.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/zafade.pdf
    • https://static.usrfiles.com/ugd/717a42_a5a392b6ccc84016be2c845e9cadc2b1.pdf
    • https://static.usrfiles.com/ugd/764aaa_df4530ba67c14d73b4aa6a8b757266e4.pdf
    • https://static.usrfiles.com/ugd/e1d12c_7d6366ed0b7b40ec9a0e65ed47c37b7d.pdf
    • https://static.usrfiles.com/ugd/9c43ec_4169d0a2419145caab033b05ada66441.pdf
    • https://static.usrfiles.com/ugd/740d8c_60a7eb30d4814a6ab42ee5727236e482.pdf
    • https://static.usrfiles.com/ugd/ca32a8_60b4b78b1d4d48bfa33c00cd076e5228.pdf
    • https://static.usrfiles.com/ugd/3bcfef_dffe501a4cb34848bb99d71d744bf288.pdf
    • https://static.usrfiles.com/ugd/3ed902_f8391b09c3c6495aae9bcc64db3c5093.pdf
    • https://static.usrfiles.com/ugd/784815_cc3164cbcf72485a8c545328234f2dc8.pdf
    • https://static.usrfiles.com/ugd/74e905_cf6283f8d443453d8469fdcfcadf8761.pdf
    • https://static.usrfiles.com/ugd/b916f4_ee9ce211335b4f07b3bc649b78a92764.pdf
    • https://static.usrfiles.com/ugd/0b46e6_177505ad60414a6e9a159cf8c5abbdce.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_off000046b3.bin
cbebe9df1aeb741b02229b7cafb155bf26019783475fdaa071238745b82b3b4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x46B3 5048 bytes
font_01_sfnt_off000057d2.bin
b2dee5157cdee489cb3c42f4887c45fef673111a0dd1039dd1a341fe911e28e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x57D2 9604 bytes
font_02_sfnt_off0000787e.bin
e58e8e8d3617fa2f52d62469859eb662c26c1c1537dc21f5cc6f1aa71eaa6aed
pdf-font-stream PDF embedded font (sfnt) at offset 0x787E 18776 bytes