Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b155e029af9d5f9…

MALICIOUS

PDF

45.1 KB Created: 2020-08-02 15:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ce8ac7596ed901ba176f0ad3c3cece8 SHA-1: aac13904f937280d2203f67a6555d50a7386ff68 SHA-256: 1b155e029af9d5f9642a8d1f5554dfbef9cf132737a4abe7ab806d1f4e5f3455
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a payment redirection lure, indicating a business-email-compromise pattern. The document body, though heavily obfuscated, contains a URL that points to a redirector. This suggests the document's primary purpose is to trick the user into visiting a malicious site, likely for financial fraud.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/pify?keyword=entourage+movie+bluray
    • http://files.yogablog.co/uploads/1/3/1/4/131406966/9110701.pdf
    • http://files.royaltyriseproductions.com/uploads/1/3/1/8/131857445/kevipazelimirix.pdf
    • http://files.bamfieldmercantile.com/uploads/1/3/1/3/131380052/5177492.pdf
    • http://files.mobilemealssoaz.org/uploads/1/3/0/7/130775171/8de09911e8.pdf
    • http://files.danbelmontmusic.com/uploads/1/3/1/8/131857983/gomisesesegib.pdf
    • https://cdn.shopify.com/s/files/1/0432/2266/3325/files/10142283096.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/wujibivedekuxozefafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/autohotkey_right_click.pdf
    • https://cdn.shopify.com/s/files/1/0430/8189/1989/files/xapilevukaxofoxep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/54919636590.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/wonderlic_sample_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6624/files/2236334325.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdf
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/tukugatitorifoduwuvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/82274915571.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_off0000715d.bin
9f83119591e527ea7bd0e3ee5f29cac9c45d40bb0fc3def72766a5ae5954c2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715D 5088 bytes
font_01_sfnt_off000082a8.bin
c46e232538d24f52dcc3769c173e4ab4c7ac0731fc2afba7d04be831b7fb38c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A8 10760 bytes

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