Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f593a856173cf7f…

MALICIOUS

PDF

37.2 KB Created: 2020-09-02 16:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e111ff52a3f9453d217119163f13f2c7 SHA-1: 1fb74655fe8218901648f177ec94bb7bc456d343 SHA-256: 1f593a856173cf7fa76d52ad87fa51d9bdf93a0af2a654d224ebe0cc193b7963
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a legal document template. This heuristic, combined with the presence of numerous other links to external PDFs hosted on Shopify, suggests a phishing or redirection attempt. The document body's content and the heuristic 'SE_INVOICE_LURE' further support the interpretation of a social engineering tactic to trick the user into clicking the malicious link.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=certificate+of+service+template+federal+court
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/35936008995.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/warrant_of_arrest_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/xugisunonivovazigom.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/91758191023.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0619/files/berliner_platz_b1_neu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/asthma_exacerbation_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/blokus_duo_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/perspective_drawing_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/new_york_wine.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_off000053d1.bin
65932bb8d248bdfca426525763fa7aed41f662108d53a9fe0862a229362f252c
pdf-font-stream PDF embedded font (sfnt) at offset 0x53D1 5264 bytes
font_01_sfnt_off000065a5.bin
6093deffccde5814e0313476755bcced3d9dbac94558613cdab8b4578a329573
pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 10168 bytes