Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb98bf043ae99e37…

MALICIOUS

PDF

55.7 KB Created: 2020-08-23 03:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3d1b2a637344bf44b660f1f6bb3558f SHA-1: c7ceabeff7508301340c6e1d95ca7827ce64c751 SHA-256: eb98bf043ae99e373f573ad1589b2146387f72ea564deb14c0ef987e5fa9d2e6
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the primary malicious URL and references to other PDFs hosted on Shopify. The ML classifier strongly supports the malicious verdict. The primary malicious URL is https://ttraff.cc/pify?keyword=bangkok+michelin+guide+street+food.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bangkok+michelin+guide+street+food
    • http://files.primerestaurant.co.nz/uploads/1/3/2/6/132696112/zafavupijomof.pdf
    • http://files.bostoncleaning.coop/uploads/1/3/1/8/131856516/jupupukovujivi-kofarezajewi.pdf
    • http://files.paharidgefriesians.com/uploads/1/3/0/7/130739155/1290115.pdf
    • https://cdn.shopify.com/s/files/1/0465/5330/1150/files/rukepazixazubixuxa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/63711004786.pdf
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/wrong_turn_2_movie_tamil_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/neumonia_viral_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0434/0930/9854/files/19621349879.pdf
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/18623090489.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/vaxolebuvalexokireluxusa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4729/5898/files/57567701400.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.pdf
    • https://cdn.shopify.com/s/files/1/0435/5165/4047/files/97243954382.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/free_online_template_for_resume.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/14462137811.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/91692373405.pdf
    • https://cdn.shopify.com/s/files/1/0447/8402/5751/files/mba_admission_essay_samples.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000776e.bin
0a78eb2de5dda4d91a9da47cf4d91044ea9cdc087d23042d062904b213fe6d95
pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 5548 bytes
font_01_sfnt_off00008a12.bin
5daba870d4e89d60f1ceefb1ddaa03dd63389a24519198e2b71f17ab86150e79
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A12 12580 bytes
font_02_sfnt_off0000adbd.bin
34e28694bc6d2f9103b7ceca3817f80143d0e08f7f27daca04f0887919f75600
pdf-font-stream PDF embedded font (sfnt) at offset 0xADBD 10512 bytes