Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa211327ee3b538…

MALICIOUS

PDF

53.1 KB Created: 2020-10-26 18:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7a0daa2d0e320b889132ce279fc2eac7 SHA-1: 9d0f3e6195e823e519a22c65e1c4a9e6327dcb29 SHA-256: eaa211327ee3b5382bd05101b049300f15aa74c3d29df79c6564759fd6a32281
134 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a malicious site. The document body's text and the embedded URL suggest a phishing or malware distribution attempt, likely disguised as relevant content. No scripts were extracted, but the PDF structure and embedded URL are strong indicators of malicious intent.

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.
  • 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://cctraff.ru/strik?keyword=what+does+queerplatonic+relationship In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f95da14cf57a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_5f9655a8c2be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411708/normal_5f95fa52bd4b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370737/normal_5f8bc0d221b5a.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/18c3c9d5-bda0-4c88-8e02-f61d6d9e9f8b/cl_dactivation_farming_simulator_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdd76c0-2530-4f93-b5a8-36d02c52e84e/pujonubipewudufakesoxezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa94a9a6-45f0-4f55-9217-0d61807d902f/43108950683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb31d9fc-8c17-4e84-a914-4f354824432d/distance_between_hurdles_in_100_metr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc8e390-4e96-4fa4-aaae-d09f87e24630/warapisogizuraxikakot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5525eddc-e24e-4a4a-a1b3-1488f5efd1d1/wildstar_classes_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8504d61c-a7eb-4754-8985-9bb7553af57b/76561905858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0245fba7-66cd-404e-84e5-8c900ac18b4f/pavimoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443795ea-d6af-4b8c-b05e-12e7b1060453/58658317359.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/columbus_clippers_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/344202604.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/abbyy_transformer_2._0_full_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/android_developer_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/xebepe.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/denis_mcquail_audience_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/wumikolodovatudosolon.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/latent_tuberculosis_infection.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/14322861808.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/linear_pulse_code_modulation.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_off00009058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9058 5300 bytes
SHA-256: 4445de6776a0594acd432e71696b0f9fb8bb863491eb4c9026b341d438ead26c
font_01_sfnt_off0000a25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25D 10980 bytes
SHA-256: 9e27d62cf8c77ee3224a1b9fa13f766c34f79db51cc9e63dc1ca53c90a70a541