Malicious PDF — malware analysis report

Static analysis result for SHA-256 b792eb2547a93881…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 01:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f3df74d4e0b2adcfd8f593cd11296da SHA-1: 7d9c00cd7c78f189e4be6cb9c00cde061f00ce16 SHA-256: b792eb2547a9388169751b03637ebe5831a6f6077659dbed1ec9e40b7be64686
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as academic resources, but the primary link redirects to malicious infrastructure at ttraff.cc. This suggests a social engineering tactic to lure users into clicking a malicious link, likely leading to further malware download or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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/wb?keyword=difference%20between%20flat%20slab%20and%20solid%20slab%20pdf
    • http://files.northwestindianaoutdoors.org/uploads/1/3/1/4/131437074/6626673.pdf
    • http://jalobip.agelessangelstraining.com/uploads/1/3/0/8/130813528/zomilawalezezum.pdf
    • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/analytical_solid_geometry_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/mytmobile_login_in.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/dadiduvakutipige.pdf
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/metal_a_headbanger_s_journey.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/17285818121.pdf
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/16877577929.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/mp3_skype_recorder.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/45881944816.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/33721334258.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/love_stage_ep_1_english_sub.pdf
    • https://cdn.shopify.com/s/files/1/0432/3373/8911/files/55376649687.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/cetoacidosis_diabetica_tratamiento_nutricional.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_off000051c4.bin
135cc9ba9a49e9c820464a041ca910154940a60f85ce1e2e2ddf02035d972ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51C4 5380 bytes
font_01_sfnt_off00006429.bin
051d046c50d03554ed791122f1629c07f94d00793f2023391a1f2a643c0895fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 9912 bytes
font_02_sfnt_off0000864a.bin
a29041989fc328615323ee4eba452f56691b7d20c3ae22c6464357b47f37bd2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x864A 2832 bytes

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