Malicious PDF — malware analysis report

Static analysis result for SHA-256 512fa69ca9d5530b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-03 15:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65c96f2ff83b6a2a9bb59e62def87442 SHA-1: 02ca2ddda9c69caaa9af8fb7480639bbc7785df0 SHA-256: 512fa69ca9d5530be9df022bfeed1961f8a519c592970c0995976a04e1e9b9fd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate this is a PDF link farm designed to lure users to malicious infrastructure. The document body, though heavily obfuscated, also contains URLs that are likely part of this distribution scheme. No scripts were extracted from this sample.

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=avoid+deny+defend+pdf
    • http://files.teachmepolish.pl/uploads/1/3/1/3/131380001/c612f595f.pdf
    • http://files.slievenamonnurseries.com/uploads/1/3/0/7/130739398/9a0f0b0a043fc90.pdf
    • http://files.ainokonkka.com/uploads/1/3/2/7/132710783/731f70197a0687d.pdf
    • http://files.albatrosshomebuyers.com/uploads/1/3/1/3/131384145/relowina_rovozol_nigaronip_kuroradulipovil.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/wavij.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6460/files/bidil.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/fifipalitizagej.pdf
    • https://cdn.shopify.com/s/files/1/0435/5063/8241/files/rifesovifabibubutet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/sojexomapupaloroderoxup.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/paxenebimibidaboxeri.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/refexekevugadasedoropipom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/87094725377.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/zapinimisotunisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6417/2445/files/vusojivudabizomekirefegim.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/rewasuzibosoganumutonejor.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/jonigukajurejevo.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_off000066ab.bin
93d648213882d6e986996d4996f4e645028628962b2365325fb916ecfe884faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AB 4668 bytes
font_01_sfnt_off000076bd.bin
9b8bfbaa76ed5ff09c62f7b0b40a3b00b26a396337502d4356335fa9ea6d5980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 9468 bytes

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