Malicious PDF — malware analysis report

Static analysis result for SHA-256 566158a1bea9a432…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 09:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ad3cb12fbc4d20dcc301430c37b2171 SHA-1: 481a5a7ed9af5d1a3e3eb1507fb9dc4bb84d4b30 SHA-256: 566158a1bea9a432223a210bda22765e91354b816d4cf813371f6a20220b8d79
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This link is presented within the document body, disguised as an 'Engineering guide'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=engineering+guide+bfa+wow
    • http://files.thothandi.com/uploads/1/3/0/9/130969499/ec83906c2c.pdf
    • http://files.theporchcommunitychurch.com/uploads/1/3/1/6/131608037/7363351.pdf
    • http://baxoz.jillianbessett.com/uploads/1/3/1/8/131856584/newubejenubegef_lavemobapawe.pdf
    • http://files.wouterbergenhuizen.com/uploads/1/3/0/8/130814769/meguwiwabojusesuzed.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/72886689557.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/bezonasabuvedewexo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/oxigeno_y_radicales_libres.pdf
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/useful_phrases_for_business_emails.pdf
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/guniduxixatowonufe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/software_engineering_ian_sommerville_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/practice_of_brahmacharya_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90841244024.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/anarchism_in_latin_america.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/messenger_for_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/cemal_paa_hatralar.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/school_marksheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/jezoxadoron.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_off00006b7f.bin
88d46ff2b65d72c3047c1fa5a0a5347796d7d0e5d37362637f2f1b9f78644027
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7F 4856 bytes
font_01_sfnt_off00007c17.bin
4489f8b4f71a587bec877d7a670c286d223e1a51ffddd7c0b185cb8c5a2cebf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 10060 bytes
font_02_sfnt_off00009e92.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E92 4324 bytes