Malicious PDF — malware analysis report

Static analysis result for SHA-256 a42a08213609f941…

MALICIOUS

PDF

40.1 KB Created: 2020-08-24 06:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81bf1f4bdcb509ef866bb9449906d719 SHA-1: c5ca177bcc1202f02b0d3635578c5e76efe99914 SHA-256: a42a08213609f941f780fd2ece7d115f962bf6ea2923b9e411a80b7aab13160f
148 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or hosting. The document body also contains a callback lure, suggesting a potential tech-support scam or phishing attempt. The primary attack vector appears to be a malicious link embedded within the document.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=chenoa+income+guidelines
    • http://files.peldongaming.com/uploads/1/3/0/7/130775730/famutumatujifope.pdf
    • http://files.27andoak.com/uploads/1/3/1/1/131163683/e8feccf6bae.pdf
    • http://files.makeupandtanningbycassie.com/uploads/1/3/0/9/130969370/8ce16ee60.pdf
    • http://files.dartsdownunder180.com/uploads/1/3/1/3/131384301/1535730.pdf
    • http://gugagexut.juliepavlock.com/uploads/1/3/1/3/131398140/4879319.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/filub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/clinical_nutrition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/adenosina_trifosfato.pdf
    • https://cdn.shopify.com/s/files/1/0440/1987/5998/files/fiwaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/92345742439.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/ritil.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/ranigajizekekibodiba.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/sql_server_tutorial_for_beginners_with_examples.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_off00005edb.bin
f319882b5f0d81db77b5c7a4366428378129bb00c9344822a78fbc6d854b0b52
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDB 5160 bytes
font_01_sfnt_off00007035.bin
6e8e5e2e301612459e8e1a25452c26010620fad7bcba4459a46656c7d7a5c32b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 10480 bytes