Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b997a1329bf55eb…

MALICIOUS

PDF

44.6 KB Created: 2020-09-02 23:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02ca0d524808f15701a0d16b690b762b SHA-1: a1d8888680df686926612cef939a03a24bd847cb SHA-256: 2b997a1329bf55eb0e1a962fb912649d39cb0414adecaa60004338fa04f69087
148 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to a URL designed to lure users with keywords like 'transunion free credit report annual'. The presence of a fake invoice/payment lure and a callback lure heuristic further supports a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and a benign PDF link, indicating a likely redirection to a malicious site.

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
  • 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.me/wix?keyword=transunion+free+credit+report+annual
    • https://static.usrfiles.com/ugd/f35da0_9b0671e42bdc405e81a33c40966cb98d.pdf
    • https://static.usrfiles.com/ugd/bae363_1fadc20d69584db0aafa49ff702e1c5b.pdf
    • https://static.usrfiles.com/ugd/286fb8_73e2729461c84212b3e3c3101c632df5.pdf
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/42424882548.pdf
    • https://cdn.shopify.com/s/files/1/0431/6004/3682/files/53191745417.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/rodatalawafezemex.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/34861557703.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/22335403269.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/56677997413.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6454/files/video_trimmer_guru_pro_apk.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_off000070c2.bin
b3100316e76140731e41c037d701b9ef4ff977780c96849d7d09e899dc1b8628		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C2 5100 bytes
font_01_sfnt_off00008224.bin
10241ed31df9ffab2668db2ff45eb5e89ed0e2457c507b627072955bb279a830		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8224 10412 bytes

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