Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b51348a1ea66987…

MALICIOUS

PDF

48.2 KB Created: 2020-08-05 23:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da30c3b47f0826b66e9069bf2f7e197 SHA-1: 60c5bab5745d73d70912605c16408445cf540752 SHA-256: 8b51348a1ea669874e1fba4a0b8369c535404418c5e335647bd288d550974be8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link, 'https://ttraff.ru/pify?keyword=alimentos+con+sodio+y+potasio+pdf', is identified as a redirector to malicious infrastructure. The document body, though partially corrupted, contains the title 'Alimentos con sodio y potasio pdf', suggesting a lure to disguise the malicious intent. The presence of numerous links, including the malicious redirector, indicates a likely attempt to drive traffic to malicious sites or distribute further malware.

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.ru/pify?keyword=alimentos+con+sodio+y+potasio+pdf
    • http://files.ryanogan.com/uploads/1/3/1/0/131070113/8703745.pdf
    • http://files.uticalax.org/uploads/1/3/0/7/130775668/bofomavo-rijasekoziw-jimejofo.pdf
    • http://files.hungerprojectatucla.com/uploads/1/3/2/3/132302894/9b90b9b51a.pdf
    • http://files.mimodelinginstruction.org/uploads/1/3/2/3/132303175/rarasesoxegunif.pdf
    • http://files.firstpresnfny.org/uploads/1/3/1/3/131397973/e0ea2efc.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4378/files/ridepusavukabatufexegimeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/bovimiwobedebak.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/lominolojozirafuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9192/files/chanakya_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/gofivogato.pdf
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/34284348602.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/kubibexol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/vodejepuzatirez.pdf
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/62191973668.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/tuvizikavegodotabaxenene.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdf
    • https://cdn.shopify.com/s/files/1/0431/6977/5782/files/25171231593.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_off000074bf.bin
2ef4642d498e8d3886fed4901bb82be629b36d3cdd02b7d1ba423e6001c721b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x74BF 5296 bytes
font_01_sfnt_off000086c4.bin
0c15a211734cef09cc5d28d6049dee72efca59cb3ec44360fd0162cd46cf5800
pdf-font-stream PDF embedded font (sfnt) at offset 0x86C4 14500 bytes