Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea8261c62164ff4…

MALICIOUS

PDF

81.5 KB Created: 2020-07-31 11:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aeade5ecba5f3483a56babf6914807b SHA-1: 68695b16e863e0a2c80c250f8b79cf92371bc7d7 SHA-256: 2ea8261c62164ff44a452f83537572ad988900dbfe5fbd428b18a867c98a9f2e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits a PDF link farm heuristic, with numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Accord de Paris' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to a malicious site.

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=accord+de+paris+r%25C3%25A9sum%25C3%25A9+pdf
    • http://files.hcreled.com/uploads/1/3/1/3/131384301/vujomimivogudidokume.pdf
    • http://files.hunterjkeane.com/uploads/1/3/2/7/132740278/a5cd0399f9f32.pdf
    • http://files.shannonwestbooks.com/uploads/1/3/1/4/131407284/nanevamok-ganizigoba-bepefajoxasaz-bonuzemu.pdf
    • http://files.finncantaxidermy.com/uploads/1/3/1/4/131452952/7950258.pdf
    • http://files.internationalfishers.com/uploads/1/3/0/8/130873822/1513709.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/labibibakamizuxogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/48160430804.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7545/files/67354022090.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/numowikelijebakefurazunuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9265/4745/files/tukiwefusesatopejenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/15641067313.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/64182173399.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/pejakomotibulodosuredixi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/wuperifuvenafirop.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/zofipi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/29116291427.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_off0000fd8c.bin
99a3823dd40ce6307e8b8b78ffd64aa2f25c643c0ef3ddef5e508faecf05cf0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8C 5096 bytes
font_01_sfnt_off00010e93.bin
f0c27baf87882c772faf98b334c24a55b356fb48c2bf43a25f4cd2fa6a0e9a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E93 12968 bytes

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