Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fabd384a86bf80b…

MALICIOUS

PDF

66.3 KB Created: 2020-08-09 06:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 277c4a743fc34644ead8ef1ef2e3e159 SHA-1: 3d824225409019f077da1e8a64e1e56a09d7cabb SHA-256: 2fabd384a86bf80bd18d26f704ae6e3e1a5bee39d5051340d1cba3b1d077d011
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting a social engineering lure related to 'soil arthropods pdf'. The PDF also contains a link farm, with many links pointing to Shopify domains, likely to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

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=soil+arthropods+pdf
    • http://files.emilylubowklobucher.com/uploads/1/3/2/7/132740838/11f6702183651c.pdf
    • http://files.pdstudios.net/uploads/1/3/1/1/131164350/5124503.pdf
    • http://tokaxe.the-witch-house.com/uploads/1/3/1/4/131406149/6761397.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/cdc_flu_vis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/stock_swing_trading_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0438/9044/2395/files/72927339578.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdf
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/quantity_adjectives_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/ammonia_vapour_compression_refrigeration_system.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/rozofatizubotobajatudis.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/92532979764.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/catalogue_avon_novembre_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/vufisiviku.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/nosoridojanolujusawuguru.pdf
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/visumegomumokavuxufa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/micheal_phelps_smoke.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_off0000c7d0.bin
0d429a5360f6f526876d12055738d16e7bd2865f71d791826ecaa13e00a2d82f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D0 5232 bytes
font_01_sfnt_off0000d992.bin
6583f98822955fbb3ca7e3914122aecfa09c4c51586d63bdf5dfe80d1cfd3ed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD992 10044 bytes

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