Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf0e89f32ff2332…

MALICIOUS

PDF

70.6 KB Created: 2020-11-19 09:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff6fbdaf5c69ce7e2fec16f0f74adf74 SHA-1: de7e86c3daef8ef563b4d9b7922064813cbf93fb SHA-256: aaf0e89f32ff23327a5dd2cb0c22e9b192cf4b889f313d342f03cb958900eb45
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=mx+anywhere+2s+user+manual PDF link annotation
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/5683756.pdfIn PDF document text
    • https://metozalolak.weebly.com/uploads/1/3/4/6/134610510/ludigozobogemin_xibilizoso_fufosopoxeloxo_pazilizobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_5f96c139c185c.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/e591a018-c7e1-41c2-b02d-d69bbef68a33/usf_morsani_college_of_medicine_scholarly_concentrations_program.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/answer_to_common_lit_assignments_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aed5a0c-725e-438f-a141-bd55ad79c214/32955990915.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bhat_br_modern_probability_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/910f257b-4421-45e0-a491-8d6ff30ec277/27790406860.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/adverb_of_time_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff36b73b-b39c-44de-beb0-a55b3c1e7b5d/5512494541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81423da0-642c-4179-9cc1-c05940276541/naruto_filler_guide_shippuden.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/bhailini_aayo_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/kobalofid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a23e4a8-cca9-4edf-aefc-512b3b70bdba/zigejitinezulukunivika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4aa24ff-5e4f-48da-acad-3decd22a91f2/calculate_with_confidence_6th_edition_free.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_off0000d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD888 5324 bytes
SHA-256: 3b65cc254dc45701a069c0ba7c50cd63cf8ec43ca63e8e6a8946596c2f6d6224
font_01_sfnt_off0000ea9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9F 10224 bytes
SHA-256: 606a25c56c04af03fbbb6f81e85ad40c62dd4c00f4bc471fa3c3ae855844e2c2

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