Malicious PDF — malware analysis report

Static analysis result for SHA-256 5451ed6c7f0a741e…

MALICIOUS

PDF

45.2 KB Created: 2020-10-28 07:55:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06b88b35db31b3fb2bf1d44c75b3f495 SHA-1: 1e35623fd654ed5478cb2df27251e97d205f6e95 SHA-256: 5451ed6c7f0a741e55ab2a4b5b36d13bd9df20316b5609582e98e98ac097cc2f
154 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to what appears to be a link farm, and one critical link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and the malicious URL, suggesting an attempt to lure the user to a harmful site.

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.ru/123?keyword=when+we+left+earth+netflix
    • https://cdn-cms.f-static.net/uploads/4385198/normal_5f97c7a5a67f3.pdf
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/rewaxirusunu-satekokisedom-xakugefunuwev-vuvorebuwozexe.pdf
    • https://togasiwivote.weebly.com/uploads/1/3/4/3/134370981/momowasipo_momemurejo_kevavegi_sudidevamoz.pdf
    • https://tizupokewa.weebly.com/uploads/1/3/4/0/134013062/zepifin-pimer-terefajajerule-komaxavis.pdf
    • https://bubawupuga.weebly.com/uploads/1/3/4/3/134380130/6173525.pdf
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/matabijaxewizoj_zumuliw_kodeziledatafe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0487/8886/5189/files/63967229138.pdf
    • https://cdn.shopify.com/s/files/1/0501/7350/9793/files/78434908933.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/summit_county_ccw.pdf
    • https://uploads.strikinglycdn.com/files/1841d27b-3a9b-4bd1-8bac-0d338d13bac1/jufovumuwezojifujax.pdf
    • https://uploads.strikinglycdn.com/files/b2636800-b659-4338-a25e-01fed33123b0/73615941789.pdf
    • https://uploads.strikinglycdn.com/files/87e81456-942f-4a20-bd1d-971be056d8eb/lixeronilu.pdf
    • https://uploads.strikinglycdn.com/files/3e1e4a2e-cf2c-4784-94cf-85b8878b49ad/las_50_sombras_de_grey_3.pdf
    • https://uploads.strikinglycdn.com/files/bc74421b-22fe-4bc0-a2e1-939af2fc6a96/61877666759.pdf
    • https://uploads.strikinglycdn.com/files/b0079a2a-6c32-4067-b6d1-8dca3f7065fa/wonder_movie_study_guide.pdf
    • https://uploads.strikinglycdn.com/files/c36d850d-975d-4330-aea6-4ec053df2071/vasemila.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_off000073a7.bin
63c7b50cc674df4aec39be165687f4be137c328fb0862036759f3c020528008b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A7 4848 bytes
font_01_sfnt_off00008439.bin
38e853810b9d46991903180a8e0385d5818db844b3c53554ed012685ad7ca10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8439 10460 bytes

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