Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0418273548cdd1…

MALICIOUS

PDF

47.8 KB Created: 2020-08-11 06:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e1a80c4edeef66fbda4b22b6d94db7 SHA-1: f1bf2346181d838d4805275684bcccc01bc14924 SHA-256: cc0418273548cdd16402ac110034e35436d5fb4598e905df8664bc7cb13e6c1a
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 'https://ttraff.ru/pify?keyword=bicyclic+and+spiro+compounds+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is designed to host numerous external links, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

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=bicyclic+and+spiro+compounds+pdf
    • http://files.speckaylighting.com/uploads/1/3/1/8/131857315/8021804.pdf
    • http://files.opusanglicanumembroidery.com/uploads/1/3/1/6/131606268/sejaf-tutananejivituw.pdf
    • http://pogabelet.eelasor.com/uploads/1/3/1/0/131070146/599118.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/21043308714.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/autocad_3d_bluebeam.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/finatabiwinigel.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/spin_selling_neil_rackham.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/62821961040.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/budonomiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/52_amantes_a_traves_del_espejo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/w3schools_html.pdf
    • https://cdn.shopify.com/s/files/1/0434/2163/0631/files/61537388567.pdf
    • https://cdn.shopify.com/s/files/1/0430/8176/0935/files/92095674398.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_off000070b9.bin
043f9590530e9f2ccf90925c8545a906cbc35dd643dff28fdf965882944735e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B9 5136 bytes
font_01_sfnt_off00008204.bin
58f944234d0e72039249fd2c80095e66eaea88977dc84e402d97803bb3a1edb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8204 10060 bytes
font_02_sfnt_off0000a47b.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA47B 4324 bytes

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