Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2ceed8a8ff7d3e…

MALICIOUS

PDF

51.9 KB Created: 2020-08-20 07:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58f47a0ad7ad1e4631b8c925e1f6ab9b SHA-1: a79c2fc7dfaf6e2b8c551978913b32971c9a4a06 SHA-256: 5e2ceed8a8ff7d3e21aa572113b607fa97a2122dfe264fb386e38c4601e011d7
154 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One prominent link directs to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a malicious campaign.

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=temperature+sensing+devices+pdf
    • http://files.troutbum.ca/uploads/1/3/1/3/131398139/detuwifufu.pdf
    • http://files.mabsinc.com/uploads/1/3/0/8/130814245/c0922c46c8dc.pdf
    • http://jefifeliv.raypecbasketball.com/uploads/1/3/0/8/130874493/mekuraxolor_duves.pdf
    • http://files.shireyanalytical.com/uploads/1/3/1/4/131408942/govuluvekup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/lugevevuditaputababag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/pisifomixizeterak.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/statistical_models_in_s_chambers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/22146860782.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/35084205483.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/pefetogerijizifig.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/nawujawinite.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/z_buffer_algorithm_in_computer_graphics.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/play_david_banner.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4592/files/lalutezed.pdf
    • https://cdn.shopify.com/s/files/1/0439/1901/6104/files/cen_tech_digital_multimeter_item_98025_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/epidemiologia_descritiva.pdf
    • https://cdn.shopify.com/s/files/1/0439/2920/6939/files/vidubopasazobos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5483/3557/files/19688281293.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_off00007bbf.bin
e7963a4b77109960cd1ba0f6354e924a0409a9d0cc503009e7c73b2fee245068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBF 5224 bytes
font_01_sfnt_off00008d69.bin
86c588fc120a4e48a7c10bbf084a35d8c23886ba48392465baaa48fa9f56a1a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D69 11944 bytes
font_02_sfnt_off0000b3b5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B5 4324 bytes

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