Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fdb94dbd7f18a6e…

MALICIOUS

PDF

287.7 KB Created: 2020-08-14 20:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3de42d5c8935a0a8a858c32c43d1254 SHA-1: abd025dc2c019c3e1f14dff17021ad6bcc091dcb SHA-256: 5fdb94dbd7f18a6e027d7f6b6815c8eadaa7010b2eea64f8e80f52881c0b937e
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL, 'https://ttraff.cc/pify?keyword=esc+guidelines+2016+af', is the primary indicator of malicious intent, likely leading to a phishing or malware download page. No scripts were extracted, but the presence of the malicious URL strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • 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/pify?keyword=esc+guidelines+2016+af
    • http://files.carlemile.com/uploads/1/3/2/8/132816107/wumenefim.pdf
    • http://files.roleofsource.com/uploads/1/3/0/7/130775393/xepovurav_nugidiwatidefe_zijat.pdf
    • http://files.mythnmagik.com/uploads/1/3/2/3/132302764/4947759.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/cubase_7_trial_activation_code_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5871/files/ielts_writing_task_2_format_structure.pdf
    • https://cdn.shopify.com/s/files/1/0436/7115/8949/files/8363951176.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/72589996750.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/dakatubilametidape.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/herbalism_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/misaxejedamasunarutoteje.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/affairscloud_puzzle.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/business_goals_and_objectives_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/gekiro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042983.bin
69e64444ce2eb7571fbb0189ad82119f5158d6fda924765db538b4f1f3398636
pdf-font-stream PDF embedded font (sfnt) at offset 0x42983 5224 bytes
font_01_sfnt_off00043b4f.bin
5788f2b02df6339fb0e907d9163e26201389b5e0c7f7cc91ed774bb146d60f37
pdf-font-stream PDF embedded font (sfnt) at offset 0x43B4F 11288 bytes
font_02_sfnt_off000461e7.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x461E7 4324 bytes