Malicious PDF — malware analysis report

Static analysis result for SHA-256 37cd929a34221c9a…

MALICIOUS

PDF

46.9 KB Created: 2020-07-29 13:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da5250355690f497ff43605212f83d83 SHA-1: be93da0d4b87d8f1534aee38e478e690f62b375e SHA-256: 37cd929a34221c9a0c142f609f807d627025ae29a255541c977504170ecfec70
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, suggests a lure related to 'Air force previous year paper pdf' and includes a call-to-action phrase. The presence of a link farm with numerous Shopify URLs, one of which is also identified as a potential redirector, further supports a malicious intent to drive traffic to malicious infrastructure.

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.com/pify?keyword=air+force+previous+year+paper+pdf
    • http://files.raglandclay.com/uploads/1/3/1/8/131857465/manidesorumobod.pdf
    • http://files.castawaycottagefl.com/uploads/1/3/0/7/130738657/zesokulunin.pdf
    • http://files.sinaitoys.com/uploads/1/3/1/4/131406182/pufon-rubasefemu-kixixifug-muxujofef.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0932/files/luwekejubibabeb.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/jemof.pdf
    • https://cdn.shopify.com/s/files/1/0436/7794/1913/files/5107223808.pdf
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/jalorokudajek.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/20752034659.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/miparimuziv.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/39076799153.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/dikuwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/37493041959.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/77859471257.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/tavubizakuf.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/
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/2075

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6b.bin
b4ae37753223323d1140c7838890be9a035e0d89de5d8303a846f7eee3ccb861
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6B 4964 bytes
font_01_sfnt_off00007d66.bin
bf321b8c9178e203da2a0e3d3f0c70994a41e1182509858096bf8fd51630011e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D66 10324 bytes
font_02_sfnt_off0000a0b1.bin
a12908a88df35a7e9eb57470e9a94a806bb52df392ce88a62d07cba2b79b9044
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B1 2832 bytes