Malicious PDF — malware analysis report

Static analysis result for SHA-256 a162ed45861f35e5…

MALICIOUS

PDF

68.6 KB Created: 2020-09-07 22:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7770f11267b409d99e5668ac6d0300dc SHA-1: 7ea520ca564e8e17311e7a9729f729981969dd5c SHA-256: a162ed45861f35e5f7ffaa0204f48aae7d59bb5966f3fdcde54f5b2853737184
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

Heuristics 3

  • 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.
  • 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=angular+2+interview+questions+pdf+free
    • https://cdn.shopify.com/s/files/1/0428/6359/1583/files/yard_man_riding_mower.pdf
    • https://cdn.shopify.com/s/files/1/0440/1790/9910/files/invoice_aging_report_sap_tcode.pdf
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/66177855194.pdf
    • https://cdn.shopify.com/s/files/1/0440/1479/6965/files/4987695601.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/60420056450.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/bejeweled_3_free_full_version_unlimited.pdf
    • https://static.usrfiles.com/ugd/41a0b6_ead0514307494645b590eddd60bd0ee5.pdf
    • https://static.usrfiles.com/ugd/fac845_bb800490a262402295f17929f4bf6a5e.pdf
    • https://static.usrfiles.com/ugd/24853a_27a171b5c280400aa1377bc6a10d2ecb.pdf
    • https://static.usrfiles.com/ugd/275374_d8804bcbb552446ea86f6aa218990bd4.pdf
    • https://static.usrfiles.com/ugd/07625c_60fb997b2adf4fb6bc7940cb8a279749.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b3c28caa47b4b82a743482ddadeec86.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf45.bin
eb3ebc59cb19805a790a9f93256d2032d8dc53a49fc1bb92478cf9a36e4583a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF45 5488 bytes
font_01_sfnt_off0000d20d.bin
505bff4f2069f95f366896e2a50d905d7d319c6e91e11fef28a5100b71b2b5f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD20D 10912 bytes
font_02_sfnt_off0000f722.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 4324 bytes

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