Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36c77ef37dd9f5d…

MALICIOUS

PDF

51.1 KB Created: 2020-10-26 14:12:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: a329bafbed467e9391d6e6ef85715b07 SHA-1: 9a5449addb0ab7ea9c8e41461f0b362bb43e91e6 SHA-256: e36c77ef37dd9f5deb3d98986d21ba235aba9e498815983990d9ab31e79a783a
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.cc/123?keyword=the+petition+of+rights+de+1628+pdf In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/rakuvudabasim-gubaxevuruwojix.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/2499676.pdfIn PDF document text
    • https://rusakubasarozu.weebly.com/uploads/1/3/4/2/134266120/dugamuvilekaw_derozekibegaviw_xokamakakujomo.pdfIn PDF document text
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/pejewidomi.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/ac86b2b.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/rezazem.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/d616cf2e-1bcb-4ab7-9087-1ddfc9178c13/45408985298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04717acb-d36b-4187-a693-efb271d6aaba/resoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf6ac59-398d-4358-992b-17569f39fd0e/4170690298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d2bc77-c8af-44cc-8589-27f6b57365a9/17833763199.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/one_way_anova_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/8967224200.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/tekemipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/118b4446-c5cf-468d-a565-91f5dedca730/mufiwedarevamagozizog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6effd13a-645f-4cc9-9cc2-6a0021b8895f/62906755584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d7b4d5-afc6-4620-ad4f-d30a9f85dc7a/you_feel_vibrations_from_deep_below_terraria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2191b8f3-606b-4972-94a1-167c782f98a8/lic_jeevan_shanti_plan_no_850_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8b38c2b-4d80-4564-a6a3-5c8da525d08f/91880535394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6036dfb3-94be-4e24-804f-71e25e01aa62/putod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3429946a-fb0e-409e-9191-3a5702848edc/baharo_phool_barsao_mera_mehboob_aaya_hai_song_download.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_off00008818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8818 5540 bytes
SHA-256: c17bbfdfb434e4fbf4b5eaa1305462f8f46173138eeb6d7b34dc45451cc4db1d
font_01_sfnt_off00009af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF1 10828 bytes
SHA-256: 1a5ed5a8855d76cfcf5a7ecb0940d820a76d83340000f76a079692a252017c42

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