Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf06dfd3e7d3962…

MALICIOUS

PDF

47.6 KB Created: 2020-08-12 20:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a56542adbebc5fff40694c3b1e6a35a SHA-1: 26ca6f17c6fc76475d944f5dd895bb9c28adf426 SHA-256: 2bf06dfd3e7d3962f0e9e90d672eddcb2776cd29e8d933c4e26f3b714147621d
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to downloading educational materials, specifically a book. The PDF_SEO_LINK_FARM heuristic further indicates a large number of external links, many of which are hosted on Shopify. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=bse+odisha+10th+class+english+book+download+pdf
    • http://files.nakayamaus.com/uploads/1/3/1/8/131856624/2274337.pdf
    • http://files.evansmstheatre.com/uploads/1/3/0/7/130776757/volatokuxoj.pdf
    • http://files.misneraudioprograms.com/uploads/1/3/1/4/131409305/gidepupolaw_vofotagutusuxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/61361827894.pdf
    • https://cdn.shopify.com/s/files/1/0433/6369/6805/files/28425869339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdf
    • https://cdn.shopify.com/s/files/1/0445/3544/7711/files/adobe_acrobat_scan_to_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/miredolanabaxufege.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/mefivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/wigojovolegasonowazadimer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/tapibuxajuzuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/89846067381.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/22406211291.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/63761126832.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/selomuzozig.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062f9.bin
3f3e764058cd798adfa20cf23185102c1774fadb1355086d079fadc35d275ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F9 5648 bytes
font_01_sfnt_off00007632.bin
1bf39900b6225532f5cfe4e5f84ab3c4c7b0e90638e281f24f415d3fe24ed3f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 1832 bytes
font_02_sfnt_off00007f01.bin
be75b3f60becf6205945181692a2f877a7c976767790e0e9715268f28ff5d6a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F01 10288 bytes
font_03_sfnt_off0000a237.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA237 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.