Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6293cbd399accb…

MALICIOUS

PDF

40.9 KB Created: 2020-08-05 17:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2db788b6445de54d9ceadfc15c0fca5e SHA-1: 2f4b43010778dde04f7ec02a75ba43d717185b66 SHA-256: 9f6293cbd399accb7be6dd5eb434d6d4a37df5316e03b4da5b2555435b655c0c
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, suggesting a lure to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=illustrator+pdf+smaller+file+size
    • http://files.cvchsboosters.com/uploads/1/3/1/8/131856353/xisasozudenani.pdf
    • http://files.boldcitydesignsjax.net/uploads/1/3/2/6/132695574/lugokab.pdf
    • http://files.realjoana.com/uploads/1/3/1/3/131380339/ebb3278f4bf6ea4.pdf
    • http://files.howardssilverlabs.com/uploads/1/3/2/7/132740620/wedugeve.pdf
    • http://files.learning-detours.com/uploads/1/3/1/4/131406222/bixefalimak.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/acid_base_buffer_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/mishkin_macroeconomics_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/couper_un_en_plusieurs_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/rijunuge.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/alliant_powder_data.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/zufolopel.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/44524782283.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/dulokanizobakubesipizobu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7967/0689/files/51815646109.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/thandi_alangaram_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/47804540714.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/zurit.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/jemoruwin.pdf
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/ssa-_1724-_f4.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_off000062b2.bin
a96c42f72026d6155c2c49deed0e3cb8952d9c7861a9f7c1a0000423ea846382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 5172 bytes
font_01_sfnt_off0000743b.bin
4d3eac182662a8686643c3043e215f6d156cd40640742c64440817169febc056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743B 10036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.