PDF malware analysis — malicious · d0825c23ae25d393

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 20:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5d965b140ca0c1f64871de2de9f0f4c9 SHA-1: ffc20ea1bd6b500d4d5c743465d94d4775674a30 SHA-256: d0825c23ae25d393ebc36613bbd963cb38f0623007eab83f25a8a453b0204b03

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=sara+shepard+books+the+perfectionists'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign content hosting sites, likely to mask the malicious redirector.

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.cc/wix?keyword=sara+shepard+books+the+perfectionists
- https://static.usrfiles.com/ugd/6240f8_76cb5a8278b14bf7ace4f7546167a14c.pdf
- https://static.usrfiles.com/ugd/e8506d_0f1464b8bdb44e5ab7e196d3f9a31ab9.pdf
- https://static.usrfiles.com/ugd/b8c837_f9cebd65e9344e0396a1a7d47873b8b1.pdf
- https://static.usrfiles.com/ugd/a86d68_e6e73f2fa6f14ca8852234f834bdd678.pdf
- https://cdn.shopify.com/s/files/1/0439/3716/9576/files/evaluating_quadratic_functions_worksheet_answers.pdf
- https://cdn.shopify.com/s/files/1/0439/9779/0366/files/2_stroke_engine_repair_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/0271/4536/files/dom_angielski_wiczenia_dla_dzieci.pdf
- https://cdn.shopify.com/s/files/1/0434/6049/3474/files/windsurf_sail_rigging_guide.pdf
- https://cdn.shopify.com/s/files/1/0433/8820/7254/files/76848014688.pdf
- https://static.usrfiles.com/ugd/fe83c3_27f1199b0a05448cad61aceaeaa9522a.pdf
- https://static.usrfiles.com/ugd/b8c837_8800f48600f345069d2bbca9e13aedf9.pdf
- https://static.usrfiles.com/ugd/e3c460_970fa16c7e694de7b6722cb66c1509ce.pdf
- https://static.usrfiles.com/ugd/10b11f_17a209bf0e3a45bd9b0fb0015ed09a0c.pdf
- https://static.usrfiles.com/ugd/b8c837_6d928d30a28b4f8c87529791b03cfff4.pdf
- https://static.usrfiles.com/ugd/c7ef1a_3541425e35ed46a58afaddb8cbc437ff.pdf
- https://static.usrfiles.com/ugd/8d57bd_63c9b4cb1ec149a6aae839a0c46aa131.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000067d0.bin` `80ce921b8e3ba13a94526a171bb042b6826143ab84a69ca744b8425430f44b41`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67D0	5520 bytes
`font_01_sfnt_off00007a80.bin` `2a5923579cda4b6e49eb74093001d6a2cbf051b7f0267dbc2429cbcb6f7bf815`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A80	10184 bytes

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