Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a3e95df688c648…

MALICIOUS

PDF

51.1 KB Created: 2020-08-06 04:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 546c19c72ef89a38260fc043335d6e86 SHA-1: 838a0f685feb44266147ae6205d45394eed44b68 SHA-256: 05a3e95df688c6481e884c10a1db8695088ecad380144c3cb76dc2633ed4fecc
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to be a lure related to strategic analysis, likely intended to trick users into clicking malicious links. The presence of a link farm heuristic further supports the malicious intent of distributing links to potentially harmful content.

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.com/pify?keyword=planejamento+estrat%25C3%25A9gico+analise+swot+pdf
    • http://pazibawup.bagsbytheshore.com/uploads/1/3/0/7/130739654/1528984.pdf
    • http://baweja.rustynailsmn.com/uploads/1/3/2/6/132681670/3720132.pdf
    • http://files.hollistonxctf.com/uploads/1/3/0/7/130739970/mebumegivi.pdf
    • http://files.nyegirlboutique.com/uploads/1/3/0/7/130740221/jefali.pdf
    • http://wuzosi.limoservicealbany.com/uploads/1/3/1/0/131070493/pugez-pikipasip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/toseruwunaduko.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/xewijirizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/kotojidozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5002/4603/files/speak_graphic_novel_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/sarujafobodewebidifani.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/gonudajoxazisevode.pdf
    • https://cdn.shopify.com/s/files/1/0440/7066/6390/files/91281138307.pdf
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/perojixusuvubipefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/64931152711.pdf
    • https://cdn.shopify.com/s/files/1/0433/1021/9432/files/zawem.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/fiwarubalewebifode.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/zisub.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085c7.bin
80b791b56e2b209268337015f9a82bd4327557cc41ec11c4a27e0bd444cc95de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C7 5784 bytes
font_01_sfnt_off0000993a.bin
6af62e92994f2c352ac9cbdaa7d376c429c2aa72df1f13f73bd92a881c28e81d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x993A 10556 bytes

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