Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6047d8d6fdfd7c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-18 16:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4a6c722d5db841971f27fa87696d9e2 SHA-1: 619eeab258db1dd4c5fb8d53e0b50859652e875a SHA-256: 9e6047d8d6fdfd7ce5527d8637669bb7f16ad2c05ea84565fc4b52a39932b468
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which is used in conjunction with the lure of 'Adguard premium license key android'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

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=adguard+premium+license+key+android
    • http://files.newlifepentecostals.net/uploads/1/3/1/3/131380485/xekopijowuvabawoxezu.pdf
    • http://files.borderlinkfarms.com/uploads/1/3/0/7/130740623/17dfabdd3dd.pdf
    • http://resora.recrates.co/uploads/1/3/1/3/131381679/rowezovefomo_ledapofi_jerukedawur_fegosefupaxi.pdf
    • http://files.hyperboreainsimultaneityofbeing.com/uploads/1/3/1/0/131070434/5508b4ff2aa7.pdf
    • http://dobejoseg.mgturpin.com/uploads/1/3/1/6/131607600/todalaz-tufesusidojef-nujizonak-tuvukodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/solving_absolute_value_inequalities_activity.pdf
    • https://cdn.shopify.com/s/files/1/0428/5300/7526/files/chronological_order_worksheets_for_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/nazezulewojubize.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/58991652708.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/48517475097.pdf
    • https://cdn.shopify.com/s/files/1/0437/6441/6661/files/relative_error_formula.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/xepomoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/concepto_de_estilos_de_aprendizaje_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/56730540181.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/alternating_current_class_12_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7641/files/mufesajikeriverokawugeri.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0b.bin
b293e367df3f779d1f920d1be3a340600f31472cadd4e4727a1f4def59672866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 5548 bytes
font_01_sfnt_off00007cdb.bin
f63294037c6ea0fc7d28cc6c78c0507d45137b2562a78855dea10c1110860fed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 14564 bytes

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