Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f682c29fec3176…

MALICIOUS

PDF

47.1 KB Created: 2020-08-31 05:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebcc392ce5ef9f237bae31d2e2ea7df9 SHA-1: d24eb9dfeb04b1a422f3033e03325c43839aa27c SHA-256: d1f682c29fec3176e4e365366202991ceba3c6a09b06df15eafb121599537f03
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=plantronics+voyager+legend+voice+com'. Additionally, it exhibits a PDF link farm pattern with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0438/0141/1744/files/fedex_freight_bill_of_lading.pdf'. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'Plantronics voyager legend voice com' and references to wkhtmltopdf, indicating it's likely a generated document. The presence of a callback phishing lure heuristic further supports the conclusion that this document is designed to trick the user into interacting with malicious links or phone numbers.

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.
  • 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
  • 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/wix?keyword=plantronics+voyager+legend+voice+com
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/fedex_freight_bill_of_lading.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7239/files/circuits_and_symbols_worksheet_answer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/74054552866.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/64214369773.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/71762576991.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/bacterial_wilt_of_ginger.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/ruzixas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/hiring_poster_template_editable.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/goxosilevenawi.pdf
    • https://static.usrfiles.com/ugd/1813b3_162053a5eee947d8b7a5b4264535a45e.pdf
    • https://static.usrfiles.com/ugd/b85eb0_48a2bf706cc940609b9454873105297e.pdf
    • https://static.usrfiles.com/ugd/b58d21_e9110aa5530b401b9b366ea6352e041a.pdf
    • https://static.usrfiles.com/ugd/7598fa_10c1c014a97e461aaa9e893a40b79c09.pdf
    • https://static.usrfiles.com/ugd/a44510_77c577d119e046ff95189a7aa648859c.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/wunibupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/become_eco_friendly_journal_assignment.pdf
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/net_framework_version_1._1_4322.pdf
    • https://cdn.shopify.com/s/files/1/0436/0146/1410/files/yo_soy_eric_zimmerman_2_google_drive.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_off00007871.bin
acd8b733a156849b3919f43de118ec583af6e1332472fb3eb2689018eb9c6956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 5424 bytes
font_01_sfnt_off00008acd.bin
bade083ab3ebdecba227c536709ac6b69eb57b9777638d8675608151f65a6223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACD 10940 bytes

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