Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1905e0668335075…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 17:36:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a92cd163609669e88d83942ec70c98 SHA-1: 29fd0418298cd54d9d68a6e99fe8b32925e85027 SHA-256: a1905e066833507529a006dd635737708dd1cda318c1ff45cc3bda3dffd4c10c
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a download for study materials. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the redirection to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector.

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.com/pify?keyword=descargar+temario+administrativo+del+estado+pdf+gratis
    • http://files.karenlindemanart.com/uploads/1/3/2/6/132681012/2944350.pdf
    • http://files.chardoncommunityactionteam.org/uploads/1/3/1/3/131384018/pugotut-newifuniz.pdf
    • http://files.gobeyondthepond.com/uploads/1/3/2/6/132683357/fb02328.pdf
    • http://files.icctexas.org/uploads/1/3/1/4/131437074/munadazuvejud_fifowov_wigavexo_jexigajif.pdf
    • http://files.irfannooruddin.org/uploads/1/3/1/4/131482884/8785152.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/nedipinaker.pdf
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/72188417864.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9132/files/bloodlines_book_4.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/xusonuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43181801848.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/10797871788.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/dababosudunotesovojerer.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/gelubunaserogewilawo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5126/files/wedepodedulidinik.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/zumetusuxepesewizinul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0103/files/fefufilajo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/musipixivibixisimuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/wefivaxemavax.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_off00005f98.bin
4bb5b71abd16e5c3da07262fbd91b957aa98a6004c1d03ba8de9ee78633e2d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 5320 bytes
font_01_sfnt_off0000719d.bin
0b6ed99ecb4b34ce631bbc2544b7a5f1f0cd4b8c84ef69550fd8ddc0ec0314fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x719D 11188 bytes
font_02_sfnt_off000095ec.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x95EC 4324 bytes