Malicious PDF — malware analysis report

Static analysis result for SHA-256 219aba837a715813…

MALICIOUS

PDF

37.9 KB Created: 2020-10-12 01:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b1301908315330be3e220a0be4a49811 SHA-1: be7172b931811720ab8f32dfa5191d85f10f6be6 SHA-256: 219aba837a715813f8d22ad93c62f299cf71d37394c42e6838571c90b7bd0cb1
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=last+christmas+i+gave+you+my+heart+lyrics+ariana+grande In PDF document text
    • http://files.wolfiesofwarwick.com/uploads/1/3/2/6/132681343/086ec.pdfIn PDF document text
    • http://pukolo.buenafarrellphotography.com/uploads/1/3/1/4/131437100/f860567f0ca.pdfIn PDF document text
    • http://files.ancientayurvedic.com/uploads/1/3/1/8/131856632/54e5f1ec99a9.pdfIn PDF document text
    • http://files.zportman.com/uploads/1/3/0/8/130874627/nejajedozufejanoxifi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fced6e92-3d36-48ee-8378-e075ac794ba9/10235895501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a0a7a2a-56f9-49c5-b6fe-8e49ed3b8b1c/54959649196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f417c272-dcf5-4fed-8e5e-17efee80d0fb/taxifevud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/542fbf7d-154f-45b2-92f2-54db56d869cd/valofumulefos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29fe06f1-2fdb-4b94-8afd-936b8ff94ecf/mudogaxuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91e1dd0e-47e5-45f9-9365-488810f5b813/nafozovukeradimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc7e6987-be57-4d18-a3da-4494df087412/sigejir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51afdec1-3c7f-4a52-84e2-696a1ee9312b/gepikodupazomureta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23fe7b6c-7462-4b07-bffa-67830beb78ee/79805781769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b01a2592-9d67-4fed-9471-70f595d61ef2/76538809288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fd6b4c0-ccbe-44cc-8af7-1d2869ef24af/xezidezokatamim.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA7 5340 bytes
SHA-256: 8dfe79c4f7b65b103a9817c2f7f74d5c41d11b196bca2e3c4b24a63c21babe8d
font_01_sfnt_off00005cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAB 9240 bytes
SHA-256: d4d20c9c55a1fea0da3a6142a2b2380621cd8d2fc750fbd562b0315eb1e08959
font_02_sfnt_off00007c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C27 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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