Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a10e3fb8445a174…

MALICIOUS

PDF

51.2 KB Created: 2020-08-14 03:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e31c3ec6310efecb8c60c18c7d896f SHA-1: 411c5136b0dce509df6a03ef3ec0d6a421ba0cb6 SHA-256: 8a10e3fb8445a174f1a5ea24c02cf08efb146196407d01203b53f64341babac0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=africa+map+worksheet', suggesting a lure to a malicious site. The presence of numerous Shopify links likely serves to obscure the malicious redirector and potentially appear more legitimate.

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=africa+map+worksheet
    • http://files.mysoapkrush.com/uploads/1/3/1/4/131408103/keduwup.pdf
    • http://files.elkfordchamber.ca/uploads/1/3/1/4/131406717/dexesu-dewegamogun-mevadesugaf-goxubodub.pdf
    • http://files.divinegracemedical.org/uploads/1/3/1/0/131070792/cbb99988.pdf
    • http://fopobirud.bootedmiles.com/uploads/1/3/0/7/130776811/974ec.pdf
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/wuretubul.pdf
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/46308624019.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/44490957904.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/guguxevelezeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/soparuvuridove.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/carson_dellosa_file_folder_games.pdf
    • https://cdn.shopify.com/s/files/1/0435/3156/7256/files/67103334489.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/79192928378.pdf
    • https://cdn.shopify.com/s/files/1/0440/6224/5029/files/apollo_fire_alarm_panel.pdf
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/lips_are_movin_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/air_ride_5th_wheel_hitch.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/austin_community_college_calendar.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_off000075ed.bin
338dcd6b559cf07126029bfc71eaaffedc543ab396d1a24d7c4328a7c39fd85d
pdf-font-stream PDF embedded font (sfnt) at offset 0x75ED 5048 bytes
font_01_sfnt_off00008721.bin
7b8a5d3f039f533a4fd505f5456349f695b284a1af3ce7df356486cff5e6bace
pdf-font-stream PDF embedded font (sfnt) at offset 0x8721 13292 bytes
font_02_sfnt_off0000b1d1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D1 4324 bytes