Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e122c4d408d2db…

MALICIOUS

PDF

35.0 KB Created: 2020-03-31 01:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b5285848d68b6d82019bb072c9aea16 SHA-1: 00337c3e0207b02e2a01d592d70b4947077da94b SHA-256: 45e122c4d408d2db26b6b34d08f73a9cc498ba15ccc326da7a96a5b0d424c085
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links to SEO-optimized PDF files hosted on various domains. This technique is commonly used for traffic distribution or to host phishing content. The document body itself contains garbled text and a reference to the topic 'Ejemplos de tejido muscular estriado esqueletico', which appears to be a lure to make the document seem legitimate.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://momlifeeboutique.online/uploads/1/3/1/4/131406930/131406930.html#ejemplos+de+tejido+muscular+estriado+esqueletico
    • http://dieselautopartsonline.com/uploads/1/3/0/2/130289453/bisamunojoraj.pdf
    • http://wodscorecard.com/uploads/1/3/0/4/130483703/31159e0c61662b3.pdf
    • http://tungemmy.store/uploads/1/3/1/4/131410606/jibagolov-xinif.pdf
    • http://ashleyscloset.shop/uploads/1/3/0/8/130814992/kasogumujedez-losobok-jaget-patejo.pdf
    • http://wowcreativetouch.com/uploads/1/3/0/4/130476263/vapisi-megolezusixu-xipolaj.pdf
    • http://groceriesandveggies.info/uploads/1/3/0/5/130542908/894fd9212.pdf
    • http://strongheadedindependenttoddler.com/uploads/1/3/0/3/130313049/xakasavipel.pdf
    • http://hochorecycle.com/uploads/1/3/0/8/130814161/8507358.pdf
    • http://hlfstreetlife.org/uploads/1/3/0/5/130552106/wajenawifaxugas_bajuzogefibenek.pdf
    • http://fictionalcharacterology.com/uploads/1/3/0/6/130639517/7316562.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f19.bin
5fce8727c2c70710272a72853e6af6f534fae2c4e6fce05e56f56d2475b47be3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F19 8196 bytes