Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d79397f9fb2fd65…

MALICIOUS

PDF

40.9 KB Created: 2020-08-08 07:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c06555dd16270397a29b7f2bd4acfbc SHA-1: 7bfde8f5817e17bdd26e629a9e22c88ad0c3cfd0 SHA-256: 4d79397f9fb2fd654351349c2ff7ff85a080d478a9c8319cdc32ed0e8e93c35f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=metric+area+conversion+worksheet+pdf`. This indicates the document is likely part of a phishing or scam campaign designed to redirect users to malicious content. 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=metric+area+conversion+worksheet+pdf
    • http://mojir.gronsetgard.com/uploads/1/3/1/6/131606349/vukopipegotux.pdf
    • http://tijuwim.earthjoysnacks.com/uploads/1/3/0/7/130775422/b8817121919d.pdf
    • http://files.racheleveholmes.com/uploads/1/3/1/3/131398515/fijasonav.pdf
    • http://files.first-contact.org/uploads/1/3/1/6/131606405/3219624.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/milubobisogikolonojiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/ribabubamikuvagerexezal.pdf
    • https://cdn.shopify.com/s/files/1/0452/4458/0002/files/equilid_50_bula.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/biology_book_10.pdf
    • https://cdn.shopify.com/s/files/1/0449/8512/2984/files/reduce_resolution_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/55281498161.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/8426980462.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/police_abuse_of_power_in_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/41941841012.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/xepimanamubuvaze.pdf
    • https://cdn.shopify.com/s/files/1/0438/4283/0496/files/fuwiged.pdf
    • https://cdn.shopify.com/s/files/1/0434/5852/7397/files/ace_english_book_adda247_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/zipibexi.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_off0000613e.bin
84d6b77226e423cb16035480385728b79dd074b02e044a7308904f7643b94875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 5432 bytes
font_01_sfnt_off000073db.bin
0c1cde3f87302f5d9e13f08a44de28ed920b2beca1b683d906ed447402ecd797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 10132 bytes

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