Malicious PDF — malware analysis report

Static analysis result for SHA-256 801e74e8c4e332e6…

MALICIOUS

PDF

55.4 KB Created: 2020-08-14 10:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8854ea799486cfea5a3ef864642cf87a SHA-1: 504d8c2db41214b9f4866e1d37342291be3ffcb9 SHA-256: 801e74e8c4e332e66470c274f9e1f5030b4dde5976cc18c1697eb33d3e20dcc2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary malicious link, https://ttraff.com/pify?keyword=bennett+college+former+presidents, is identified as a known malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=bennett+college+former+presidents
    • http://files.mchschoralprogram.com/uploads/1/3/1/3/131378776/6666349.pdf
    • http://files.thetlacademy.shop/uploads/1/3/1/3/131384789/dupive-madelubupazape-dezarekinoza.pdf
    • http://satov.menopausalmommyrants.com/uploads/1/3/0/7/130776445/5698901.pdf
    • http://files.missperryseducationstation.com/uploads/1/3/1/4/131438439/abafb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wotisewokunupep.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/72596036762.pdf
    • https://cdn.shopify.com/s/files/1/0439/5198/0712/files/49012394750.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/html_image_link.pdf
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/biology_textbook_miller_and_levine_prentice_hall.pdf
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/kowixujaramizurul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/zenoxebezevuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/vaxibuxenusale.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/95165380291.pdf
    • https://cdn.shopify.com/s/files/1/0434/7917/1222/files/affinities_of_protochordates.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/mujemibozimanadajowaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/witomejo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/bobcat_863_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/95672086256.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006543.bin
16b90d63ab2045f1f0f41df7b78104d2aa212f507f1fbc746a545803cd1d1b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6543 15604 bytes
font_01_sfnt_off00009792.bin
3843058397f9399eca640f569595c6a2dc44593cd7deee65c259730ad0326735		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9792 5312 bytes
font_02_sfnt_off0000a993.bin
fe378c3f73144136990c50b60b38a5e0cdb579a8897481d37d15a2e3b4c6635b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA993 11808 bytes

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