Malicious PDF — malware analysis report

Static analysis result for SHA-256 5651295d2c57a5f1…

MALICIOUS

PDF

52.2 KB Created: 2020-08-24 11:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8683983b1062cf8eb9ccdaecb740b285 SHA-1: 7c852f31be1357bc677f88163758e207ec98b1e4 SHA-256: 5651295d2c57a5f1d7a6bf84ed624c739c758b0e789f5b83ca6f9dd97b8cf673
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=common+app+school+report'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several Shopify URLs, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure via the 'ttraff.ru' domain.

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=common+app+school+report
    • http://wemaveru.nabhanlaw.com/uploads/1/3/1/4/131453574/30bca8d.pdf
    • http://files.improvisolab.com/uploads/1/3/2/6/132695325/6208493.pdf
    • http://newinur.artclassdallas.com/uploads/1/3/2/6/132695969/majodo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9661/files/pemasigisosobelepop.pdf
    • https://cdn.shopify.com/s/files/1/0436/8901/7497/files/padirawij.pdf
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/gukulizefevonibagiladava.pdf
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/xuwowawejokosojamimonuwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/how_to_remove_mysql_from_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/todesasatiwupofe.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/ranakavej.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/71439384098.pdf
    • https://cdn.shopify.com/s/files/1/0447/9696/9121/files/ap_physics_lab_report_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/zasosuzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/kuxetaluvixutidamuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/define_health_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5197/files/small_scale_livestock_farming.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_off00008203.bin
5e25ac1733c767acea50a637e9bf2a8caf83df3cf5e4624de361e8a580c31ca6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8203 4936 bytes
font_01_sfnt_off00009291.bin
0bb723cee1fff5c25758e531592e9534080d8cea9a20a068b08a73461e6071f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9291 10360 bytes
font_02_sfnt_off0000b610.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB610 4324 bytes