Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ace547e8acf4082…

MALICIOUS

PDF

80.1 KB Created: 2020-12-28 17:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e4b54708cb81808e093f901f80d3fd52 SHA-1: 88706ddbd9d86cefcad89c6da0961da6bee337d8 SHA-256: 5ace547e8acf4082132efa86fc8f5d0a9663619a0b1e88c6a519bbce6b8e3aab
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, many of which are disguised as search results for popular content, a common tactic for SEO poisoning and phishing. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the presence of URLs like 'https://traffnew.ru/aws?utm_term=eagoler+chokh+bengali+full+movie+free' suggests a lure to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/aws?utm_term=eagoler+chokh+bengali+full+movie+free PDF link annotation
    • https://bozobamawokoruv.weebly.com/uploads/1/3/4/3/134350924/5792478.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/merazojedejig-vuzekuxub.pdfIn PDF document text
    • https://pafebexazare.weebly.com/uploads/1/3/1/1/131163914/4491849.pdfIn PDF document text
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/791663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484631/normal_5fb36d2ad7e79.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://s3.amazonaws.com/zamemigojat/injustice_2_android_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/internal_auditing_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/91646389601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2831c5-6cb1-45df-b4a5-f1f573bf2e0b/saxokupukuwupofolakajepes.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/xasiseb.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/personality_plus_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0515893c-94da-4526-98d1-78f5e41a899e/chiappa_rhino_holster_30ds.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/65921197157.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD178 5140 bytes
SHA-256: 3c54bebce065c200f115f0d14c3af5eb8f7e0d6d5de1b09b3ebd59aa79e98be0
font_01_sfnt_off0000e2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CA 8416 bytes
SHA-256: 14e7116efcb33684916126a81b8b7214fb7ab7a3dbb1ad8ad63cef44b927a811
font_02_sfnt_off0000fe3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3C 11824 bytes
SHA-256: e3600a66f1189fa27727986474e40d2a383923ee6e3117e2ec818c4d961f7493
font_03_sfnt_off0001254c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1254C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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