Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e437dd411da61f6…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 23:35:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ac75ae9ba85366e530760eca0f559a0 SHA-1: 7c056b76013d02126643583883c5d81f968f372c SHA-256: 8e437dd411da61f6fb55288af0195b1e403ceb70d304d1de2d7098342772ccb8
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The primary link, 'https://ttraff.cc/pify?keyword=characteristics+of+successful+communication+pdf', is a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to trick the user into clicking this link. The presence of numerous other links to Shopify domains indicates a link farm strategy, likely to improve search engine ranking for malicious content.

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.cc/pify?keyword=characteristics+of+successful+communication+pdf
    • http://files.paminingprofessionals.org/uploads/1/3/1/4/131453636/xonedugunivixidor.pdf
    • http://files.jenniferchapin.net/uploads/1/3/1/3/131380687/1826936.pdf
    • http://files.herartsinaction.org/uploads/1/3/2/6/132681513/7494948.pdf
    • http://files.audiostak.com/uploads/1/3/0/7/130739112/796abb66a.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/81902141949.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/zuvotodixopale.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/cirros_image_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/pdf_to_word_ocr_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/5829/0070/files/xegaginimenuwawaruvumejal.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/mhtml_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1125/files/33660468406.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/permissions_0644_for_are_too_open.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/97591387215.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/xampp_mysql_root_password.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/behaviour_management_techniques_for_challenging_behaviour.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/xawufido.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/wirelanopoladov.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_off0000719e.bin
be348a0e480f0790d220a1897515b1dc1e4a015cd8a549c0c85f74f89a495c87
pdf-font-stream PDF embedded font (sfnt) at offset 0x719E 5300 bytes
font_01_sfnt_off00008373.bin
e3ebf8c3f500ba8a157d9cb167e61e3721ffc91e650338ebf1ba42f094259d2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8373 9824 bytes