Malicious PDF — malware analysis report

Static analysis result for SHA-256 769d8fb7aa7d600e…

MALICIOUS

PDF

37.0 KB Created: 2020-11-04 15:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 12446b8e609d4252d201a1fb224cd8d4 SHA-1: c5e5f766f7109527961d4c8eb41da6910f31546a SHA-256: 769d8fb7aa7d600eabaedbfc2ee242ceafe06551cce11e1e3977cd967990ad56
102 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which is flagged as a malicious redirector. The document body also contains urgency-related text, suggesting a lure to entice users to click the malicious link. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or malware distribution attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/123?keyword=andyslife+org+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f8cfe09553f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f8b2f265c8ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8a9ff5b8760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385412/normal_5f9087a8d098c.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/c167e7091.pdfIn PDF document text
    • https://lobevebuwavija.weebly.com/uploads/1/3/4/3/134394718/lolalolabet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384836/normal_5f972a39857ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f87e5bfee105.pdfIn PDF document text
    • https://rixapozati.weebly.com/uploads/1/3/4/4/134456921/wefedakij_tawidojus_pefevinutawuga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5f9357a7d0324.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zugutixe/redekupogojivikesule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4410/7950/files/upload_image_to_google_cloud_storage_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6361/8965/files/enrolled_agent_salary_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000451e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x451E 5028 bytes
SHA-256: 5df3de57a87b39b40ad7e29bbee0fa5fcb31825cab491a249ec299baf086afa7
font_01_sfnt_off00005618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5618 10300 bytes
SHA-256: 2b49aac975432adef65759a8ad8a45e803d80d8a1f7776129d0605698c328047
font_02_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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