Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f4d33577b48e4d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 01:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01dd89f74674a9711a3646274b0a3eb5 SHA-1: a6389f70df37c34288178ebc595f033ac5125628 SHA-256: 14f4d33577b48e4d00536092924b4cce37adf2fab7138d704604feb9937c4846
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying it as a link farm pointing to a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=online+co+op+platformers, which is flagged as malicious. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=online+co+op+platformers
    • http://files.bijouxbychloe.com/uploads/1/3/0/7/130739107/1798257.pdf
    • http://files.ginkgotree-advisors.de/uploads/1/3/0/7/130739415/eef2b3a.pdf
    • http://files.theranchantioch.com/uploads/1/3/1/4/131437666/5799613.pdf
    • http://files.5starbuild.com/uploads/1/3/0/7/130738628/rejaxufoxunafixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9785/7954/files/88154723865.pdf
    • https://cdn.shopify.com/s/files/1/0437/3001/0263/files/klein_conduit_bender_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/personal_pronouns_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nefodegaxinavikiva.pdf
    • https://cdn.shopify.com/s/files/1/0428/1348/9318/files/autocad_annotation_scale_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/watebimor.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/biggest_city_in_florida.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/gw2_scribe_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1868/files/98559598331.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/english_grammar_articles_worksheet.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_off000065ba.bin
31931efb46f0e632db07d9e51d191af109a03167471416716da92fb46b27e3e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x65BA 5188 bytes
font_01_sfnt_off00007747.bin
1417fa12ca7463ddbd3d7efe93f42c33cec68c2f14c2623ec64ff5bb62e80217
pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 10016 bytes