Malicious PDF — malware analysis report

Static analysis result for SHA-256 697da8e44587124a…

MALICIOUS

PDF

39.9 KB Created: 2020-08-30 06:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5c341d23c8ba7662f30b75ac7f7fcf4 SHA-1: a2c8beedbedaba9e511a832d6b93832b9098dc49 SHA-256: 697da8e44587124ad5e6ea14ffea9663d2c557a21ba81c9a975c48505fd437a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.com/wix?keyword=ishihara+colour+vision+test+pdf`. This indicates the document is likely part of a campaign to redirect users to malicious sites, possibly 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/wix?keyword=ishihara+colour+vision+test+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/88054426362.pdf
    • https://cdn.shopify.com/s/files/1/0463/3234/6523/files/recent_android_version_2019.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6518/files/wivuwisipumuwanifaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0498/files/18500671270.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/97867459914.pdf
    • https://cdn.shopify.com/s/files/1/0434/3398/4157/files/fipalub.pdf
    • https://cdn.shopify.com/s/files/1/0428/4134/2108/files/20056456500.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/19887168063.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/falako.pdf
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/57547608340.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/butatupedivibemakabavabem.pdf
    • https://cdn.shopify.com/s/files/1/0434/1576/5159/files/present_continuous_tense_exercises_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/27098255313.pdf
    • https://cdn.shopify.com/s/files/1/0439/7803/1262/files/45712690172.pdf
    • https://cdn.shopify.com/s/files/1/0436/4170/0505/files/baccalaurat_en_informatique_uqam.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_off00005d50.bin
9333dedf1e2d4fb0568d2c296e916fb216a9f11ca3d3766a94529bc09804c537
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D50 5240 bytes
font_01_sfnt_off00006f1c.bin
480c12eb351bd31775c2ac79ed8c89f1536bb0c3bd0198e865be2a9c85e3a6bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1C 10488 bytes