Malicious PDF — malware analysis report

Static analysis result for SHA-256 31059ce96c64f609…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 01:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 513d52cafdf223da8c586ea25e294869 SHA-1: c2920c6cc70901fe4b80b2868048b35db1e06708 SHA-256: 31059ce96c64f609dce6ac6c0ce3e0c3656d399f8480c5080e59c1d27ce42be0
128 Risk Score

Malware Insights

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

The PDF contains a lure for a free ebook, which is a common social engineering tactic. It embeds multiple links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/wix?keyword=atomic+habits+free+ebook'. The PDF also contains a mass external link farm, with 'https://static.usrfiles.com/ugd/b8c837_5aa99666413049e5ba5b3b5bb0c49d1d.pdf' being one of the identified links. The document body, though heavily obfuscated, contains references to the ebook and the malicious URL.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=atomic+habits+free+ebook
    • https://static.usrfiles.com/ugd/b8c837_5aa99666413049e5ba5b3b5bb0c49d1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9436f4bf0adf43519e33418329dfb0f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_acfffb4ccc3644329500c1ea517f5368.pdf
    • https://static.usrfiles.com/ugd/f84671_81d0bbe40cda4cdaa25e0d58bc59aa99.pdf
    • https://static.usrfiles.com/ugd/b8c837_14170206c1c74eaca49206bd59230354.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/science_fair_abstract.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/kambi_katha_malayalam_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ralaguguzovepusumizus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/xedugimiduxopodagebu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/fundamentals_of_digital_photography_download.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_4136341af1c44945b92aeb3701c26371.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_eb93aff95155492ebc8b8a7ccb32eef6.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_03901c274e6f4360a6c3b67129fbf2ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_98354f1194a24134a6492c032af1aa61.pdf
    • https://static.usrfiles.com/ugd/d5d855_82271cc51d574ed79d334d0befd09d2e.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007040.bin
fcfbf63922db0fff1abd89e4aba6ab98bedc53fa76e2fe079bae189cfe39a895
pdf-font-stream PDF embedded font (sfnt) at offset 0x7040 5280 bytes
font_01_sfnt_off0000820f.bin
9ef07cf8481a1d27303d8860c262d98b5880b8ba789b5dc544bfa2c9a2ffe09c
pdf-font-stream PDF embedded font (sfnt) at offset 0x820F 10188 bytes