Malicious PDF — malware analysis report

Static analysis result for SHA-256 06199c8c95a2cb19…

MALICIOUS

PDF

38.8 KB Created: 2020-08-13 22:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9918f48649d374d94290f1cb8d40d34a SHA-1: e813f825373c1808eb45dbf34a243755afaf86fa SHA-256: 06199c8c95a2cb19b6e7a8340c56efb259f961a685e3bb427decbeefa3ba9379
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, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports this assessment. The document body, though partially corrupted, contains text related to data collection and the tool used to generate the PDF, likely serving as a lure.

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.cc/wb?keyword=methods%20and%20tools%20of%20data%20collection%20pdf
    • http://boxaba.thefivegreenes.com/uploads/1/3/0/7/130776177/5a9ed.pdf
    • http://nedux.gospelhillministry.org/uploads/1/3/1/1/131164250/runewimif_dimezed_vejawamoweze.pdf
    • http://files.wgdairysupply.com/uploads/1/3/2/6/132682790/da19b125d14a9.pdf
    • http://files.donandmargieabroard.com/uploads/1/3/1/0/131071076/f2b818fc74ed0.pdf
    • http://files.halltosuccess.com/uploads/1/3/1/6/131606756/sikomolesolubo_jisipugeje.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/99030007028.pdf
    • https://cdn.shopify.com/s/files/1/0433/5016/3609/files/atls_10th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/off_balance_sheet_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/wetakedumekukiwaserutemim.pdf
    • https://cdn.shopify.com/s/files/1/0435/7727/8627/files/fupamomolaresijeja.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/algebra_worksheets_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/borigajudij.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/suwen.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/dna_little_mix_album_download_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/great_expectations_study_guide_answers.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_off00005b36.bin
8777275a3d52dc20165e7cecb49e8aeb125fd6199e507e5fd17f49822b72fa6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B36 5152 bytes
font_01_sfnt_off00006cc9.bin
4eb33117f22b136244f4ea16df2b1e5d86df9c8fa2d5175118aeb781928b9165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 9872 bytes

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