Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab92eaa7a14a3ea6…

MALICIOUS

PDF

33.1 KB Created: 2020-08-13 09:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae87773e1de382ddcc85bd85e2e84e42 SHA-1: b045d8375445b210a15f17ba4cc198075d51eaa5 SHA-256: ab92eaa7a14a3ea68b6adda0a155d2f21e2d0a296e2b51bbf9b94c3a8f81b008
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, likely for SEO poisoning. One critical heuristic indicates a direct link to a known malicious redirector at 'https://ttraff.cc/wb?keyword=accidentally%20in%20love%20with%20a%20gangster%20pdf'. This redirector is likely used to funnel victims to malicious content. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=accidentally%20in%20love%20with%20a%20gangster%20pdf
    • http://files.thejewelryboxatl.com/uploads/1/3/0/7/130739490/ca1234de0abb.pdf
    • http://files.shawndfilms.com/uploads/1/3/0/7/130775033/8188120.pdf
    • http://vodusij.lindezaclothing.com/uploads/1/3/0/9/130969060/juwilafa_wuwimelutukazom.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/allele_specific_pcr_principle.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/83864435277.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/45172525872.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/orthographic_drawing_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0451/1321/3093/files/carnatic_music_book_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0440/2610/1925/files/fuxumugilutaluxogamofineg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/78863511719.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/jizumap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/zikefuxoxaporibelamenida.pdf
    • https://cdn.shopify.com/s/files/1/0431/8593/0402/files/90232949468.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/for_loop_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0429/4773/9811/files/jenimudotolidavuluwidew.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_off00004415.bin
a245b81ab32ac33ace6ef80523685a0f743d259d420a2cf4f0956c7fc2b934a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4415 5660 bytes
font_01_sfnt_off00005764.bin
41d449c29dee9b14d310827a11097fa49e6280c33ba633478ef4189b0567b9e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5764 9364 bytes

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