Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e267410eea423e0…

MALICIOUS

PDF

73.2 KB Created: 2020-08-08 21:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e4b8eec435118a8ca21a02278e9258b SHA-1: 062e5288c4c46b1d3b30a0607ba1ab84926e735d SHA-256: 0e267410eea423e0d6481970ffa2b3a9c8a253a7c4b47874b510be5bd692b148
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the one identified by the heuristic. This suggests the PDF is designed to trick users into visiting a malicious site under the guise of providing academic notes.

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=cardiovascular+system+physiology+notes+pdf
    • http://futuwig.johnanthonyguitars.com/uploads/1/3/0/8/130874197/lejoruzubidamonu.pdf
    • http://files.nadinefletcher.com/uploads/1/3/1/0/131071043/384edb6.pdf
    • http://files.codeblaque.com/uploads/1/3/1/3/131384101/wokepudozuwizodu.pdf
    • http://files.top50pikeseries.ca/uploads/1/3/0/7/130775645/jasavirejenedat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9911/1070/files/inorganic_chemistry_principles_of_structure_and_reactivity_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/pewefitemuvukumutuniwaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0802/2938/files/argala_stotram_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/fimelebogaxolebo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/47416975100.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/17373277302.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/jizegopenemixet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/635577497.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/air_pollution_control_a_design_approach_cooper.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/firinidarazavel.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/borimamobibomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/blood_cancer_negative_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/craftsman_lawn_tractor_repair_manual.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c59c.bin
d75337a68b1a70841f7e0912c1e726c8450603dd5c06725bdc89b069147d98e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC59C 5636 bytes
font_01_sfnt_off0000d8ae.bin
aec52fc7a5a5e3a393e265b860d39f5343bcb1614d1be33ad57d307773b89102		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AE 12692 bytes
font_02_sfnt_off0001014d.bin
2fbb528c30fae61c70ff4082faa5fece981988df10abad1a91cab371b780b9de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1014D 16192 bytes

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