Malicious PDF — malware analysis report

Static analysis result for SHA-256 1799c3dfb79fa23f…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 22:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64cdd1d8e696d8c80b5a2cdafada3c44 SHA-1: ad9a211800b938324fb962495fcf08a70d5e43fe SHA-256: 1799c3dfb79fa23f2a5030052ff84016da683b7b242a8935dbb25b5cec48f0d1
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a link farm designed to host other PDFs. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.cc', which is used to obscure the final destination. The document body itself contains obfuscated text and the malicious URL, suggesting an attempt to disguise its true purpose. No scripts were extracted, but the presence of numerous links and the redirector heuristic strongly indicate a phishing or redirection attack.

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/pify?keyword=the+economist+pdf+2020+may
    • http://pamapuwot.highlifewatches.com/uploads/1/3/0/8/130874633/4045233.pdf
    • http://files.jodypeardesigns.com/uploads/1/3/1/3/131379312/6215730.pdf
    • http://files.southernshannon.com/uploads/1/3/0/7/130775506/nilak.pdf
    • http://files.mattpiercegamecalls.com/uploads/1/3/2/6/132681501/66158.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/16425993416.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/podifoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/setagejikijoreponomovori.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/21729930874.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/spelling_worksheets_6th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/prefixes_and_suffixes_exercises_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/2049/9620/files/60148831830.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/7270610014.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/zepapibepenakafawuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/labizaberibubutupivede.pdf
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/80596510190.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0536/files/goririjolugasaxanuviret.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/personal_statement_for_job.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_off0000696c.bin
022d517ce68540de7a9e07e820f4fc1878345acaf61791881ea9836c228acc30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5592 bytes
font_01_sfnt_off00007c44.bin
73f41266b651a981dfeb10afc01340445b4c7c2fc26fd68135d55bead0645c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 14640 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.