Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d1421ff8db56dd…

MALICIOUS

PDF

36.3 KB Created: 2020-08-07 04:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 785a298ae4c59cd3047a897555cbcff0 SHA-1: 62d3b958abd87587520958cb2868a96239f0c069 SHA-256: 58d1421ff8db56dd7ed611214cb8b0aa61d85e118497fc5e816d9cc221259af4
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one identified by the heuristic. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting. 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.cc/pify?keyword=anacalypsis+vol+2+pdf
    • http://files.woodfieldmscurtis.com/uploads/1/3/0/8/130873992/lilikikifesupu.pdf
    • http://files.pcarep.com/uploads/1/3/1/3/131380175/kalubupiwetap.pdf
    • http://files.arizonafiberartsretreat.com/uploads/1/3/1/4/131409442/roxetebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1670/files/46970244080.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/46904119941.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/chemistry_form_4_chapter_1_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/66359480708.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/puzewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/tufinefibawufido.pdf
    • https://cdn.shopify.com/s/files/1/0432/2017/2960/files/76940276002.pdf
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/63121714738.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/2016_golf_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0428/8456/3110/files/48766081901.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_off00005106.bin
136aa0fa53df8b0938be0f84c3cdea7a72ec0e2314dd750651f9b109588e9133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5106 5336 bytes
font_01_sfnt_off00006359.bin
5944fda7ef1e1309143262fc91d6a48d0a2caf5c2d45e3fe90fbd0fad6b870de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 9836 bytes

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