Malicious PDF — malware analysis report

Static analysis result for SHA-256 740f73463f2b7f49…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 21:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0233c6c6df302204651d900e9ffb69cf SHA-1: 534c409015c37314eb22fa275b8af62d5fe49f1c SHA-256: 740f73463f2b7f49f1d7f90e5a574c09eea9de1bc98c8c3861de854c817b0c3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, with one prominently pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting an attempt to disguise malicious content as a lesson plan template. The presence of a large number of external links, many pointing to Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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.ru/pify?keyword=lesson+plan+for+high+school+template
    • http://files.skylinevisioning.com/uploads/1/3/2/6/132681378/ratulamaxawig_sizosesupu.pdf
    • http://rolol.togetherwalking.com/uploads/1/3/1/3/131381720/31f01d99d7.pdf
    • http://files.ehdenis.com/uploads/1/3/0/8/130814423/0f7658e1448c.pdf
    • http://zujaj.lauratofarides.co.uk/uploads/1/3/1/3/131383483/dexovenosox_domasotujuga_runegaja_gifovotajivo.pdf
    • http://files.4-ucorp.com/uploads/1/3/0/7/130739567/7385382.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/roxigapavovijutureloso.pdf
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/figure_it_out_christopher_hart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/zevezepo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/nifonerab.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/cbt_nuggets_kickass.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/burgess_shale_fauna.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/random_real_address.pdf
    • https://cdn.shopify.com/s/files/1/0435/7193/7441/files/reading_skills_and_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/jexumivizeniwoviwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2910/1735/files/ion_profile_pro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/dishonored_2_trainer.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000657d.bin
bb121f8b2dcbbbe78d200750461e7c05bf22c6bc8644380a5e304a06b44904af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 5372 bytes
font_01_sfnt_off0000779b.bin
ac1486e2c3ee25b0f9f3d6c9528ca4f20cf6eea5dfa0233af15628733be6d388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779B 9940 bytes

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