Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1dd688f0761540…

MALICIOUS

PDF

43.7 KB Created: 2020-08-18 13:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50f75beeec3619e4e13c59c2d2a88da1 SHA-1: 27872db78e6566db6b56a383e30c784c3f5fa137 SHA-256: dc1dd688f0761540e81aa4b3017372bcf01337ce5405ee94f4b428b6860f81e9
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as an answer key for a physical science test. The document body, though heavily obfuscated, contains the target URL and references to 'physical science if8767 answer key measuring length'. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted from this sample.

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=physical+science+if8767+answer+key+measuring+length
    • http://files.pleasantviewumc-abingdon.com/uploads/1/3/0/8/130814611/6360422.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/89386258640.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/sasomorebojopo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/gifegexosipopopepijadevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/tribal_monterrey_intentalo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/52999415766.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/fenner_make_pin_bush_coupling_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/free_lagu_andmesh_cinta_luar_biasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/31908096085.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2726/files/gelelubimubivatejap.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0536/files/punaxebebalugefise.pdf
    • https://cdn.shopify.com/s/files/1/0432/2961/0141/files/basic_python_programs_for_practice.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/47119773163.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/26450741874.pdf
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/how_to_skip_everfi_videos.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/alveolar_bone.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/1/0431/4379/0760/files/fenner_make_pin_bush_coupling_catalogu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006933.bin
7083351737045372f3739b249f3df01da86a7e8e7d3bf6c48e0def42d8eacee5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 5980 bytes
font_01_sfnt_off00007d75.bin
e9c3da10b00568988b4deaea5049b34bed7afef0bc9ce133002c156063643d0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 10452 bytes