Malicious PDF — malware analysis report

Static analysis result for SHA-256 099ec5a182aeac7a…

MALICIOUS

PDF

70.6 KB Created: 2020-09-16 13:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1d9ba252e314973f9c33a80bffc18c9 SHA-1: a894edfa9a59fe0b4caa25ae84a9095a35394976 SHA-256: 099ec5a182aeac7a2c5f7231d63d03e7b4f6125629bda0fc7bf5e84fec5ae359
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic firing indicating a redirector link to 'https://ttraff.club/wix?keyword=create+a+critter+cricut+cartridge+images'. Another critical heuristic identified a PDF link farm, with many links pointing to external PDF files. The document body also contains the same search query, suggesting a lure to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content.

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.club/wix?keyword=create+a+critter+cricut+cartridge+images
    • http://files.biasranch.com/uploads/1/3/1/4/131453684/tafaw.pdf
    • http://noxevu.enfieldctbouncehouserentals.com/uploads/1/3/0/8/130813835/ruwuxufo.pdf
    • http://files.fxbrwanda.org/uploads/1/3/0/9/130969809/tubetavowavamoz_ferorilobu.pdf
    • http://lituk.blinkchildrensartstudio.com/uploads/1/3/0/9/130969110/naxexepulunalal_lufadakovajuso_xupexed.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6743/9259/files/tufumasekizajomovuve.pdf
    • https://602d76cf-39b8-4805-a783-f5e529798ba1.filesusr.com/ugd/227d0f_41dc10072f704395a14aa51aa71f922f.pdf?index=true
    • https://26b34fd8-5e4e-4a3e-bfea-e1d5681bf8f2.filesusr.com/ugd/dcf311_dfcc6cb60d834e718fb75d14b693fad0.pdf?index=true
    • https://d33ba8b3-a666-4303-9248-0610a85f1f8e.filesusr.com/ugd/2994dd_d1cc7326e39349f4938ea291edcefcf0.pdf?index=true
    • https://e0775da4-1a80-41a3-bcce-284b244ef21b.filesusr.com/ugd/4329d7_001af320dbbd4db6aa9f83f99b4402a5.pdf?index=true
    • https://9c05afd2-1a8b-43f5-adf8-0587100365ff.filesusr.com/ugd/b463f2_8bf53c5d9c8b4613a31019dbfdb534de.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/introduccin_a_la_administracin_mod.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/vampire_the_masquerade_bloodlines_2_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/best_reader_for_windows_10_64_bit.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2e1.bin
8e2e4e71608f69c34f5c0ffd58776968d1e24fc16a5e74dfd960fdeed90174e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E1 5132 bytes
font_01_sfnt_off0000c439.bin
a38e017a168f62d1f145c3a9792e55e690736d977ccb967f1fff6df2bfa79f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC439 16488 bytes
font_02_sfnt_off0000f742.bin
a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF742 16388 bytes

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