Malicious PDF — malware analysis report

Static analysis result for SHA-256 386291f464ca0eab…

MALICIOUS

PDF

46.5 KB Created: 2020-08-17 09:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8ea1790a444b3f8b15771991414616 SHA-1: e1872d962ee2bdb9051804282fc088bfceda4c73 SHA-256: 386291f464ca0eab40de57a426cbba4c728a1bfe6be608a8970129870af1d5a7
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious URL, disguised with a lure related to exam results. The PDF also contains a large number of links to external PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. The presence of a call-to-action button further supports a malicious intent to trick the user into clicking the link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=how+to+get+marksheet+of+ctet+2019
    • http://files.srmswildcatband.com/uploads/1/3/1/4/131406749/4815598.pdf
    • http://files.heartsower.com/uploads/1/3/2/6/132683140/popusimufudoj.pdf
    • http://files.debbiesangelsproductions.com/uploads/1/3/1/3/131380354/gogilopino.pdf
    • http://nidigel.liviyahansen.com/uploads/1/3/0/9/130969648/sawiz.pdf
    • http://files.flawlessdiamondstx.com/uploads/1/3/1/0/131071082/zikava_kabevowa_fokiniwal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/pulefisimarum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/4963264501.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/analog_ammeter_and_voltmeter.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/litutiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/demotivation_poster_maker.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2147/files/sudamigupapuwezorubizem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/recirculating_aquaculture_systems_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/fevelegogura.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/1049865759.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.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_off000061f3.bin
309fd1eb128ff80c24d73015d61ff38faafa2dbe141ebefa81be2c7e5595a34f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F3 5864 bytes
font_01_sfnt_off000075e0.bin
b682bd42fdd8bd838069b6c9b5470e76fc026482c540480918de0c6f6b04ef99
pdf-font-stream PDF embedded font (sfnt) at offset 0x75E0 10536 bytes
font_02_sfnt_off00009a23.bin
b3374923b7a9e5ef74b32e3c6bfeb2cece07179835186c5ca1abf5854bed9518
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A23 4536 bytes