Malicious PDF — malware analysis report

Static analysis result for SHA-256 663ca536d0c02760…

MALICIOUS

PDF

41.0 KB Created: 2020-10-16 01:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 89e4f0c401b960f49e111b0fc27aae45 SHA-1: b7d1d36d0c8db150dc48e83b6249c84e1bb8ab3f SHA-256: 663ca536d0c02760bc47e41d270afbed019501e1d22a3076cb2eba22f1c5c9cd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links pointing to external websites, many of which are hosted on link farms. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to click on these links, which likely leads to further malicious content or phishing pages.

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.link/pify?keyword=riesgo+electrico+pdf+peru In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/poberopubusoxi.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/2872142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f8880d447cb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_5f88be2eaa48b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0139168-063f-4757-9427-cb8d51147579/6674742990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ebdbd14-b49f-4dca-9741-cb9ef1914c64/38929993528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fd7cc4c-96c7-46e9-946e-21b5d8bd3b1a/nowafasugokuketav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53de207-26b9-4434-b57d-627209d337ec/basawezugukevokejabuluroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3366fbd-7bdf-47be-b7e0-44c2eb5fcd8e/vibisekiwomedelip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/835cf5d5-1e71-4edf-9e02-5c017eae807d/51107412123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e14a3adf-4f85-4e51-8f41-36911c3ceda7/8980474254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9678143-59bd-407f-9372-a3f17b88fe73/1240922819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc044743-2b26-45fa-80ba-55e48d72cbab/20660185563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/649fdacd-6a39-4037-a2bc-82cb1b302990/favinilowawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e2d3a8b-a582-4086-8b2f-db4c145e3914/kanagigivoxudikiru.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 5120 bytes
SHA-256: 0c33c9dc9af70c0e7b0aa0f7097ff5bf3880477b2898d532beb8d54f366e6414
font_01_sfnt_off00007465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7465 10220 bytes
SHA-256: baa438563c5e6e170647d22548aa2ae7ff22747e926faf904178319dfdaba167

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