Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab05df2ea05be32a…

MALICIOUS

PDF

35.3 KB Created: 2020-08-06 15:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b85fd0e51ebf9cddd763ec3f2e29606f SHA-1: bd82c1ecb2a871945015291a62acc0020396d1f9 SHA-256: ab05df2ea05be32a72e51fa42445b1b7bb5a71b93fd2635fba80c0cfcff03ebb
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify domains but are likely used to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=sound+of+silence+chords+pdf
    • http://files.stvshlds.com/uploads/1/3/1/4/131454158/tokigi.pdf
    • http://gimasunor.weddingcakesbysharon.com/uploads/1/3/2/7/132712109/fiwaxomominiwu_vizukepo_xisiwexitogejij.pdf
    • http://zikekipo.bluewaterscuba.com/uploads/1/3/1/4/131437462/kubegetu.pdf
    • http://files.franksrockyhill.com/uploads/1/3/0/7/130740175/durakosuxuredoled.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/osrs_icthlarin_s_little_helper.pdf
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/cricket_world_cup_2020_schedule_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/85558795895.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2069/files/sajizomiw.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/62514147371.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/what_do_horses_eat_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0434/0314/9479/files/adiabatic_lapse_rate.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0133/files/bejigiguvoputode.pdf
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/printable_monthly_attendance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/67198575237.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/gesenumixojij.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_off00004d75.bin
8f2a308d079bee0e79cb673d7f94762c534df9a2340837dfed544edd6419f12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D75 5136 bytes
font_01_sfnt_off00005eef.bin
7cd516d17c27a158635e5b00f1f3aefb385f5506217e22f5a5da2c3690afadc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEF 9840 bytes

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