Malicious PDF — malware analysis report

Static analysis result for SHA-256 4589887616df70ab…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 03:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8ed0dad5e0d1b1e33d2693fb5628c6a SHA-1: b8a6b2e74a73c849f8b308442d95840b916e84d1 SHA-256: 4589887616df70ab75fd5c60039af3c37faaa95025f46c3bfc620d13d4568270
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.com/pify?keyword=how+to+edit+imovie+trailer+templates+iphone, which is designed to lead users to further malicious content. The document body, though corrupted, contains keywords related to the malicious URL, suggesting a lure. The ML classifier strongly flagged this PDF as malicious.

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=how+to+edit+imovie+trailer+templates+iphone
    • http://files.shannoncangey.com/uploads/1/3/0/8/130874385/ximufozinete.pdf
    • http://files.mindyourbodyfitnessandnutrition.com/uploads/1/3/0/7/130739470/f02963c1cf8116f.pdf
    • http://files.greenchairpictures.com/uploads/1/3/2/6/132682758/wujozumagovijop.pdf
    • http://jupenef.janavalloneboudoir.com/uploads/1/3/1/4/131410685/befimawis.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/acr_contrast_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/49810202334.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/vinekugexifutujetavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/ketosis_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/2149/9548/files/32159605999.pdf
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/41015473030.pdf
    • https://cdn.shopify.com/s/files/1/0434/5354/6656/files/primer_convenio_de_ginebra.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/core_exercises_for_low_back_pain.pdf
    • https://cdn.shopify.com/s/files/1/0441/2204/6616/files/pre_calculus_grade_12_module.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9829/files/58647866307.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c95.bin
7750a79651ec714aebfc047d9e61ac0666250a72a767c68023c1f219a72f65e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C95 5312 bytes
font_01_sfnt_off00006e8a.bin
2ac121446c71642e758eec27cee5c42e619f2c0d0eac9ca007a7b05cb9241139
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8A 9948 bytes