Malicious PDF — malware analysis report

Static analysis result for SHA-256 e550c98488861885…

MALICIOUS

PDF

40.4 KB Created: 2020-08-18 20:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14a46b1fefb6c5e1e8ce31a6f74faa96 SHA-1: 5997785a8df4a2e68774fa287235803b98d087ae SHA-256: e550c984888618850783df62ea86e515ea390e59bf7e1ecd2d4fde55fbf86292
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document's primary purpose is to trick users into visiting a malicious URL, likely for further exploitation or credential harvesting. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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=hunter+douglas+powerview+installation+guide
    • http://files.examinators.com/uploads/1/3/2/6/132695828/4095348.pdf
    • http://files.midtownwestschool.org/uploads/1/3/1/8/131858916/be509f8e67e.pdf
    • http://files.illinitutoring.com/uploads/1/3/0/8/130813366/9958735.pdf
    • http://jolonulu.marksturgess.org/uploads/1/3/1/1/131163559/fivixozut-vunaru-pibevaparabaw-vowig.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/gepipaxigor.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/cell_cycle_interphase.pdf
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/elcometer_456_coating_thickness_gauge.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/boston_diagnostic_aphasia_examination_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/73934408644.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/the_magical_number_seven_plus_or_minus_two.pdf
    • https://cdn.shopify.com/s/files/1/0431/9376/1956/files/visual_studio_2015_key.pdf
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/caroling_caroling.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5237/files/bengali_to_english_conversation.pdf
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/bloomberg_terminal_functions.pdf
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/pepovebaxisubajidabosobot.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_off00005e3e.bin
bb803d5f2897d3716b690b0a5062b9a6a9c8a3d816a619a3672249b409617cf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3E 5240 bytes
font_01_sfnt_off00007035.bin
1aeba58bd6289a16fea0efb38559db59d89def4c4496084b61e1de67698586d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 10512 bytes