Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78738733c474f6…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 11:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87be08fe4bce9e397405bc99c0f51fc9 SHA-1: 9a30dd9f3d038e6f7763eabcf73e0fbaf7a3db7e SHA-256: 6e78738733c474f6e13e819521d60393132ecb2cd1ac18c79f2d02a5e85ccb73
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to host or distribute further malicious content. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'epilepsy and the functional anatomy of the human brain pdf'. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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.cc/pify?keyword=epilepsy+and+the+functional+anatomy+of+the+human+brain+pdf
    • http://files.seasonsheart.com/uploads/1/3/1/3/131381900/2630337.pdf
    • http://xulit.poisonivy-designs.com/uploads/1/3/1/0/131070450/6427808.pdf
    • http://files.scribbledscratch.com/uploads/1/3/1/8/131856071/3861211.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/23469995639.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/92353617792.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/temolibokivimabuso.pdf
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/lalixonulex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/wagolodosapofiwedulabaru.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/1742439043.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/unisa_application_form_2020_second_semester.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/iteration_of_rational_functions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0622/0712/files/adventure_time_season_8_episode_9.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/xaxujujigudopas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/siwodamewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/wasoweworites.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_off000068a7.bin
0fcca3fbf6312700b47c5a1c158e59b947fdbc502ff63e4c67aa0a359c9895c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 5596 bytes
font_01_sfnt_off00007b83.bin
9afcc814371cfbb76bfb9a7c65c453da809fd49713036311180fa71daba53c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B83 9764 bytes

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