Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a172427a67180da…

MALICIOUS

PDF

45.1 KB Created: 2020-08-08 10:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891de2230b5e2e067214f312b395bbbd SHA-1: 2289e650a5572b23af3733bfc1ad5f95ea947099 SHA-256: 8a172427a67180da80160f4eceddc51591b0640190319928585514845eeeae45
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is related to "algebra equations notes pdf", likely a lure to entice users to click the malicious link. The embedded link directs to `https://ttraff.cc/pify?keyword=algebra+equations+notes+pdf`, which is flagged as malicious. The file also contains numerous links to shopify.com and other domains, likely part of a link farm to improve search engine ranking for the lure content.

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=algebra+equations+notes+pdf
    • http://files.changedbythomas.com/uploads/1/3/0/7/130776499/617ba31.pdf
    • http://files.beachleech.com/uploads/1/3/0/9/130970023/3393608.pdf
    • http://files.atowncenter.org/uploads/1/3/1/8/131860645/fokisawo.pdf
    • http://files.technologyallianceontario.com/uploads/1/3/1/1/131163736/gabalomiluleba.pdf
    • http://files.brokenbayparentcouncil.com/uploads/1/3/1/8/131857315/6890804.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/volanabuwisenamuga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0081/files/73782649368.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/104046800.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/18248195117.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/tiwagibavidozunedu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/97956558204.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/55918234555.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/48256786699.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/wuduragav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56802730071.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_off0000720a.bin
00e588c783cd55cf50f9bbeeddece0fed4806a8fd0fd988047bc09d0a83aa709		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720A 5464 bytes
font_01_sfnt_off000084a0.bin
a86d412f7916475ef53767a3fe2eb6dd5851d0afc3bc3bb843b394f5672eabc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A0 10296 bytes

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