Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3702452eef967b9…

MALICIOUS

PDF

47.4 KB Created: 2020-08-23 08:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64d2a11ed3cf7be7cbb68e5a65b70da2 SHA-1: c8e36efd2ec7dab824bd185d11aa397e86b3f871 SHA-256: a3702452eef967b9153c7592cbb7005327295e53f2f30b0ced6f8b6288567668
128 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/pify?keyword=msa+altair+4xr+bluetooth+manual'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The file's purpose appears to be directing users to malicious infrastructure under the guise of providing a manual.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=msa+altair+4xr+bluetooth+manual
    • http://sexuve.adventurepickle.com/uploads/1/3/1/1/131164250/tavagekifomazudepo.pdf
    • http://files.ilcpr.com/uploads/1/3/0/8/130813461/sakozinunogaw.pdf
    • http://files.sandpiperstudio-photographybychristine.com/uploads/1/3/1/3/131380063/nowugej.pdf
    • http://wuluna.goprofloorsllc.com/uploads/1/3/0/9/130969179/vejilabujikisozo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/vijoxotodurizexejujovizum.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/wopuxibifotutolamelibu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/bible_study_topics_for_young_adults.pdf
    • https://cdn.shopify.com/s/files/1/0437/5655/2343/files/sedaxuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/84204820084.pdf
    • https://cdn.shopify.com/s/files/1/0454/1834/8712/files/advantages_and_disadvantages_of_alternative_fuels.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8905/files/setting_up_act_for_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/subobeposik.pdf
    • https://cdn.shopify.com/s/files/1/0437/9944/5664/files/45955189059.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/33314221650.pdf
    • https://cdn.shopify.com/s/files/1/0450/0019/6264/files/43815090591.pdf
    • https://cdn.shopify.com/s/files/1/0440/1171/6766/files/fokugutabajunaliwas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7616/4515/files/autocad_2014_lt_64_bit_free.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_off00006e91.bin
e0effbdec5806e4b3d6b81780f0dc5cd38a7d07405c3a4689bd6c271adde7b4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E91 5108 bytes
font_01_sfnt_off00007fc9.bin
060d77dfa756e560ee79d4f6eaf77a2bfabc8ec665a84694303af9d28f45cf72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC9 10012 bytes
font_02_sfnt_off0000a20a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA20A 4324 bytes

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