Malicious PDF — malware analysis report

Static analysis result for SHA-256 9068d640114c9ff4…

MALICIOUS

PDF

39.6 KB Created: 2020-08-10 07:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6e83d2fe82f4fc2d9ff57d70bef6cb51 SHA-1: b0726a9f6718313faf1d961c6c11e0c20ecf5d6b SHA-256: 9068d640114c9ff4a813d4101f1d44475e6d7dfd4d8a65ab8c8c0a12a25c0477
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=maharashtra+amnesty+scheme+2020+pdf, suggesting a lure related to an amnesty scheme. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely for SEO manipulation or to host further malicious 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.ru/pify?keyword=maharashtra+amnesty+scheme+2020+pdf In PDF document text
    • http://xofeleviv.thewatertank.co.uk/uploads/1/3/2/8/132814930/novuwununi-miwibilun-tewozilijozop.pdfIn PDF document text
    • http://files.innerheartpathways.com/uploads/1/3/2/6/132681002/46e9335.pdfIn PDF document text
    • http://weroga.orovalley.org/uploads/1/3/0/9/130969723/17ce2.pdfIn PDF document text
    • http://files.classroomworldwide.org/uploads/1/3/1/3/131398193/fuwerikovefa-nitonijiz-jovalel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/97636675318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/rozubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/34446211738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/43443893942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2546/3456/files/84140662926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/roxirajurubiguminu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1850/7672/files/ncert_solutions_for_class_11_biology_chapter_3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/dexafapiwenuxuzojetav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/bidowavapokabugexesuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9368/files/biposuvimomirofekesuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/md_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/actionable_feedback.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2A 5744 bytes
SHA-256: c70ae856ec76990b74f0420023d307627fcaaafad66b1caa4d420363ec36009f
font_01_sfnt_off00006ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA1 10152 bytes
SHA-256: 6bcb40e74ede2ea12b0f59349cf51e4e3dae23a03519b8218912d6a06223c48c

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