Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f560687067a6d0…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 07:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75b67f423e76f0499dae7f5798833ae0 SHA-1: 17249768167832727b943cdf95034f8425748189 SHA-256: b9f560687067a6d0fb600725572791783c465497f44a491cd190f9fff0eac766
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as a worksheet. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The primary malicious URL is ttraff.ru, which is used to redirect the user to potentially harmful 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=types+of+sentences+worksheet+2nd+grade
    • http://files.mileslens.com/uploads/1/3/1/3/131383493/toxulagikokapewigaf.pdf
    • http://moben.georgektan.com/uploads/1/3/0/7/130739113/gewidoj.pdf
    • https://cdn.shopify.com/s/files/1/0460/2416/3487/files/madden_19_rookie_ratings_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0449/6500/3423/files/26110896402.pdf
    • https://cdn.shopify.com/s/files/1/0433/8427/5100/files/free_download_edit_files_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/75637649562.pdf
    • https://cdn.shopify.com/s/files/1/0438/6373/6475/files/shyam_baba_bhajan_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0695/files/25465446654.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6071/files/workout_at_home_without_equipment.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/13156709675.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/kukoruwafosevun.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_off00005d20.bin
0d77ded509d963915f2866d5ac8881ca8714295d30c32cd9b3c25f02b12db5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D20 5724 bytes
font_01_sfnt_off000070ba.bin
2e717c368c31a4886c7ca100b52b2820d3788d09cc258450028ea9dbcc547f7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BA 10088 bytes
font_02_sfnt_off00009363.bin
edc33fe94617b35fa5734827a91efdc9665031ac3a5a8b8018a6396f4204b3d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9363 16116 bytes

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