Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fb29f15cc41dd4…

MALICIOUS

PDF

87.4 KB Created: 2020-08-29 21:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48c26e418cc190b5735ee6eb9d0a1fc0 SHA-1: 2c42ce77e1e0664fbef0be248ffe7f63f8db163f SHA-256: 38fb29f15cc41dd49b7bdc2bfd282f4eeb821a9d9ecdbd184769744238a14393
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=york+diamond+80+manual'. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to generate traffic or distribute content through numerous external links, many hosted on Shopify. A low-severity heuristic indicates the presence of a visual download button lure. The document body, though heavily obfuscated, contains the malicious URL.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=york+diamond+80+manual
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/top_tung_acupuncture_points.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/61987280343.pdf
    • https://cdn.shopify.com/s/files/1/0454/7097/4118/files/jawujibomovimipuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/electro_pneumatic_valves.pdf
    • https://cdn.shopify.com/s/files/1/0466/7070/8901/files/rejedolovizibamesuvizaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/7246/0702/files/13335592814.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/android_7._1._1_ambient_display.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/statistical_data_mining_using_sas_applications.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/nolagoverifisegakoxafalo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/capybara_select_option.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/types_of_polymerase_chain_reaction.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/birid.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_off00011077.bin
1b3ba96cfb0095885067c4d1917a2e0154166580d76b70394914326bcd912bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11077 5156 bytes
font_01_sfnt_off000121e2.bin
b428a67541ad4ba76604a4d43c7916cf55740fcc6a06eba6b1d594b1a0e2b2ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121E2 14556 bytes

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