Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fff8e3aaa727762…

MALICIOUS

PDF

73.9 KB Created: 2021-06-12 19:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9e471a7d4963b2cc08c73368164e3e92 SHA-1: c99272424bf6c6e543bfcae5d48bb4cbcd62a330 SHA-256: 2fff8e3aaa727762624e01dc4b990df009558c2b05b6f5b87bc2367107f2d800
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The embedded URLs and the PDF structure point towards an attempt to manipulate search engine results or direct users to potentially harmful content.

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://infrive.ru/pbw?utm_term=designing+type+karen+cheng+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384310/normal_60495dc06b745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472185/normal_6016fc545c689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_6067e85c4fcb5.pdfIn PDF document text
    • https://perelixaji.weebly.com/uploads/1/3/4/8/134881923/5bdc51ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_600e0dec4cc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_600d017048c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464065/normal_60bbb7e484ebc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_6018ac3f87b2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5fd1e232ced03.pdfIn PDF document text
    • https://mozufutedubido.weebly.com/uploads/1/3/4/5/134503110/75e442d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464870/normal_600f4c7d3bd82.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/e09722fe-0790-4d18-9815-fe95f56fb250/el_doble_cuantico_como_funciona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca56ab80-a40b-421f-a285-6338117f586e/how_to_connect_my_vizio_sound_bar.pdfIn PDF document text
    • http://donigipoz.pbworks.com/w/file/fetch/144928803/mod_of_hill_climb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f96f19-3045-447c-b7b5-50b2ef2d57b1/millennium_lo_que_no_te_mata_te_hace_ms_fuerte_pelicula_wikipedia.pdfIn PDF document text
    • http://fosodijo.pbworks.com/f/candide_fiche_de_lecture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b9e3def-4b4b-4eea-865c-146c5af799e2/cuenta_conmigo_pelicula_completa_online_espaol_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d8de199-0e7d-42b9-ae4a-19450d372b5e/7509319194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca2bfb26-386f-49b9-9782-9cc1260961c3/gawolavojogotu.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_off0000df8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8E 5548 bytes
SHA-256: 5a18a0452063a9ca249bc4002075a86facb9f0def739eb7f2bf8538250799429
font_01_sfnt_off0000f27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 11912 bytes
SHA-256: e2a1e186d98e719ed7b084085a413755568a5137e8b450359f497966a650a0fb

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