Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22480c0773adef4…

MALICIOUS

PDF

48.4 KB Created: 2020-08-31 05:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5effe5b9f018d4018e1ac813651957fc SHA-1: 43e3b83b96265f5f8526abb278da0f3b300b705a SHA-256: a22480c0773adef4363cb203f10bfdde937489a872dd4de11e45359689590830
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the PDF structure itself does not indicate specific exploit techniques beyond the malicious link.

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.link/wix?keyword=como+analizar+oraciones+compuestas+coordinadas
    • https://static.usrfiles.com/ugd/bf0735_e747770e82e84b0a937a823e221f8369.pdf
    • https://static.usrfiles.com/ugd/4ae4db_1871d950eb944bc290f13149695c3794.pdf
    • https://static.usrfiles.com/ugd/77941b_d7b7e5cd03d14c93a5a3df21cae6237d.pdf
    • https://cdn.shopify.com/s/files/1/0428/8852/8035/files/virus_herpes_varicela_zoster.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/reading_comprehension_worksheets_grade_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/8921/6163/files/niwaroto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7817/9221/files/automatic_control_systems_raven.pdf
    • https://cdn.shopify.com/s/files/1/0429/0261/8278/files/zafilofufova.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/pugozuzuzejupafenisiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/futikuzazojexopuvenewipu.pdf
    • https://cdn.shopify.com/s/files/1/0458/0166/8774/files/2020_mclaren_720s.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/the_prize_julie_garwood.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/wenibuwenukaliwojaponapu.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_off000066b6.bin
3f07a4dcbb6b950ac20d6ed1ee343d1ea5c7639ded4da7bffab7dcadb5a0af5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B6 5176 bytes
font_01_sfnt_off00007831.bin
831b7fec8bbed133930a6eff4c0d2d17bcd40575155a6708e30b37db4eae14e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7831 11700 bytes
font_02_sfnt_off00009e0e.bin
9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0E 16068 bytes

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