Malicious PDF — malware analysis report

Static analysis result for SHA-256 832366dd800895e7…

MALICIOUS

PDF

33.0 KB Created: 2020-08-24 07:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fe020e0a107362e948f1a4904aa8647 SHA-1: 9ccb9ac11d3cfe94c705d95c699502e6d56145eb SHA-256: 832366dd800895e7885f605be2176e6eec3a4e5752d2baaaaa26c09879cf8c4b
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many pointing to Shopify domains, designed to appear as a link farm. One prominent link, 'https://ttraff.com/pify?keyword=present+perfect+and+past+perfect+worksheet', leads to a known malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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.com/pify?keyword=present+perfect+and+past+perfect+worksheet
    • http://files.thequietcone.com.au/uploads/1/3/1/0/131071137/xezerufi.pdf
    • http://files.inniscarraparish.com/uploads/1/3/2/7/132712358/c05830050c5de.pdf
    • http://devativ.adolescentidentities.com/uploads/1/3/2/6/132681862/64b925.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/euro_symbol_latex.pdf
    • https://cdn.shopify.com/s/files/1/0446/6461/9171/files/lagamifinidixavamoket.pdf
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/44314025525.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/aadhaar_card_portal_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/chemistry_brown_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/xolexemumet.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4204/files/lost_city_osrs_quick_guide.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/rita_status_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/9187/0375/files/luvabilavagokuwafojeni.pdf
    • https://cdn.shopify.com/s/files/1/0440/7050/2550/files/35715576456.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/13072601362.pdf
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/naughts_and_crosses_online.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_off0000445f.bin
0b491cab74c70a83fb80fd24135885eec788bbb3242079957978339fb2b0b037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x445F 5368 bytes
font_01_sfnt_off000056a3.bin
d8888524b16be30eda241ff315b9d6d2784be4b160f018a59cf82cb5ea0a2eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A3 9484 bytes

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