Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8817e28863e82db…

MALICIOUS

PDF

44.2 KB Created: 2020-07-25 18:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f8701bc4e2ccdf51f96fbdd67031b98 SHA-1: 9e8f27f9fcd7c406f7b522aa5492090e846978e8 SHA-256: d8817e28863e82db7fb09e867061c5bc5d9c7a5054011e494fcd002f0a95108a
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a helpful resource. This suggests a phishing or social engineering attack aimed at directing users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.com/wb?keyword=how%20to%20add%20a%20pdf%20into%20a%20powerpoint%20presentation
    • http://files.landscapeaestheticsllc.com/uploads/1/3/2/6/132696112/pogemujejivobefazuwe.pdf
    • http://files.sahms.net/uploads/1/3/0/7/130740123/zimufojetakajes-wazonexojural.pdf
    • http://files.lavenderlanemi.com/uploads/1/3/2/6/132696263/302973682aa.pdf
    • http://files.modernhomebuyers.us/uploads/1/3/2/7/132740767/vefalexolev-pidomif.pdf
    • http://files.clanchildhealth.org/uploads/1/3/1/4/131452997/dagewugojoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/11918543559.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/fuxibupavemotupejeweb.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0741/files/1299951638.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/5673968677.pdf
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/gikijekalividelijab.pdf
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/954360366.pdf
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/mabater.pdf
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/zogogurafekata.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/49388963522.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/fumaduzox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/durogibepedepozed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007093.bin
58d0db53ab3b57b40836feba3e99d6881e1b319bd7669bf8091ea66280bb7dc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7093 4844 bytes
font_01_sfnt_off0000811e.bin
8dd4151038b147a6e750d37c3a5e2b223cdda4f85a9a60fa87731d5675108bc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x811E 9904 bytes