Malicious PDF — malware analysis report

Static analysis result for SHA-256 232643cbb6af9e7d…

MALICIOUS

PDF

67.2 KB Created: 2020-08-03 22:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83d5671f543a6a16ccab8ca09495990c SHA-1: 604b3e521c1532292f889bd43cb757b506c3d42f SHA-256: 232643cbb6af9e7db4b52406fe7825d398b4b47501f6604635d5eeda6be74c17
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the malicious URL. This suggests a phishing attempt to redirect users to malicious content.

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.ru/pify?keyword=world+famous+autobiographies+pdf
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.pdf
    • http://files.stpeterslimpsfield.org/uploads/1/3/1/4/131454106/katuxeva-petukoresabek-wujudipuxu-jemajusiw.pdf
    • http://files.stevepimental.com/uploads/1/3/1/6/131606758/susagobakolul.pdf
    • http://files.mrshoge.com/uploads/1/3/1/3/131398532/vekolutizexube-dabotaf-bipegevaxag.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/lenev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/fifonologafowuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/tetebapumukomun.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/caroling_songs.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/riwafeno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86526592296.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/59566564588.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/didilumotobikotalije.pdf
    • https://cdn.shopify.com/s/files/1/0438/0029/7633/files/timex_ironman_triathlon_watch_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/26759609470.pdf
    • https://cdn.shopify.com/s/files/1/0448/0499/7271/files/free_printable_calendars_october_2015.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/organic_chemistry_brown.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/15199487463.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_off0000c906.bin
2e3d1832bd4ba53ecbfe0a857da2c42eda3c55174382c47a01e3ded087db88bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC906 5608 bytes
font_01_sfnt_off0000dbf7.bin
60ab3ea462178c281c7d640dfd8736e28da0c3021e3cb915bddd76a7eccd580e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 10408 bytes

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