Malicious PDF — malware analysis report

Static analysis result for SHA-256 1856a97df6d4025b…

MALICIOUS

PDF

41.5 KB Created: 2020-10-27 13:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 465ed59cf66b239472c34d24d23c09f1 SHA-1: 141fff3b7865b608d703a98b945a33805583d09d SHA-256: 1856a97df6d4025b3c4bba9d325af25a08a8ed82cfa1128f1bc46663c88b49d3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/123?keyword=1+on+1+soccer+brazil+cheats+codes In PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/a3b553f00eef.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/zeradari.pdfIn PDF document text
    • https://zipalusub.weebly.com/uploads/1/3/4/3/134343211/ravugusa.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/d96ab15ee.pdfIn PDF document text
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/jenagetujisifom_dedurilu.pdfIn PDF document text
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/7203915.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/8394075.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/vesuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f8d06081ba81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5f9749b98efd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f9213f16fa40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377908/normal_5f96053b385c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000636a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000636a.bin)
    • https://cdn.shopify.com/s/files/1/0496/1022/7876/files/jelezamimalejowajof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/rome_total_war_spain_faction_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7793/1686/files/kemutibuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace29477-a708-49ac-abc8-d7170d5c70e5/75291363907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16a568f-79b9-4f60-aacc-ce0d5a71d7bb/fisizabepifowalozaniteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9b0401-ce58-468b-b203-a74b04a7b080/gexadafijigakukeloratal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9a9ef7d-1508-4045-95e0-e6fca17e22bf/befejadudoxumawufujiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d9b736-2977-4113-938b-9c875bf89634/36940088896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/745b41fd-bade-47ef-aeb5-019cb929ae67/56391156208.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/403be246-3ecf-4d9c-999d-dd5732140273/namumazudolavupim.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 extracted file (font_00_sfnt_off0000636a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 5172 bytes
SHA-256: 36f24eb723d07af4592567f8cd91609b8cda7ec84f8153f576a18495cf1a3ac3
font_01_sfnt_off000074f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F5 10656 bytes
SHA-256: 1eb4332b516cda066d32c6de3291ae98619e7f86234a43bcdd00089518c52510