Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10e0c212e989a34…

MALICIOUS

PDF

36.2 KB Created: 2020-08-12 00:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34b9d038146e18bd067e7f8c75da7586 SHA-1: de8060f466b64cd46d224dc3eee11a2ae6ae54c9 SHA-256: e10e0c212e989a34ed34b2784e6e2456beb59329a4ac420f4620faa9f7791fcd
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content. The presence of multiple Shopify URLs, some benign and some unknown, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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=wordly+wise+3000+book+7+test+booklet+pdf
    • http://xijut.friendsofeverbloom.com/uploads/1/3/2/6/132695578/50c50cb8e1.pdf
    • http://files.oneofthosedays.org/uploads/1/3/1/3/131383821/joziva.pdf
    • http://files.maxsulik.com/uploads/1/3/1/6/131606719/povusamafalaw-xuxunoduwo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0534/files/scared_to_be_lonely_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/73080884022.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/sujet_brevet_franais_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/15154787810.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/woperusuxizatewefeleviwan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1637/1867/files/abbyy_transformer_software_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/terapi_asidosis_metabolik.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/california_association_of_realtors_rental_application.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/83499827313.pdf
    • https://cdn.shopify.com/s/files/1/0440/4540/2277/files/78647561920.pdf
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/53072630080.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/93912651225.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/47725967330.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_off00004e79.bin
426f8eeb155fd0e50ec8e9e79d17dd6b7643c891e738f8bbc14a48de5781f69f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E79 5620 bytes
font_01_sfnt_off000061d6.bin
6ea585bd82bfb12108e4e4b2cfefeaaacbe109782c10996972c40fcef4b090fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 9988 bytes

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