Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d121f1e30a2c89f…

MALICIOUS

PDF

74.8 KB Created: 2021-05-24 21:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7a284607d6ffefa32f4f5cf3742004d7 SHA-1: 5828c8b1dd386cecb2a21eed1b3e44043ab063ce SHA-256: 4d121f1e30a2c89f47b0d823c04c2b3305d9d3df461762ed2d190d751fedc9fd
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://druttle.ru/strik?utm_term=cuisinart+hand+blender+won%2527t+turn+on PDF link annotation
    • https://fiketizi.weebly.com/uploads/1/3/5/3/135387405/mulebaromusaduwak.pdfIn PDF document text
    • https://xovawezovikax.weebly.com/uploads/1/3/0/9/130969403/0c4d2094a74f.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/jemosulef-lamowebut.pdfIn PDF document text
    • https://logifuvixejexa.weebly.com/uploads/1/3/6/0/136019385/9370761.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/c0e97033-bad1-4b05-badd-18e85c234a97/seth_klarman_baupost_letter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/204d6cb8-1163-45eb-8321-c4e1b95dbb50/luxaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6bd671b-0ff6-499a-8d20-19d44d69c164/cuisinart_compact_air_fryer_toaster_oven_kohls.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/wesidelugevifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d86d70e9-6383-473a-94df-5dc904053cb1/sigmund_freud_psychoanalysis_focused_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbe7558a-ba15-46d2-8e84-38af70a93da0/wajununuzuxikafot.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/physics_equation_sheet_a_level_ocr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96475d3b-6a6e-4f1a-a00f-4474ba260c28/13505437365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6092e8f-eb27-437d-9493-e41eb1150e1c/balurubisoxitujapavadozi.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/11857740879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c46b4b5-33da-45b9-acf8-2813f0a3a426/bob_revolution_flex_2015_vs_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38b09e1-fa48-4b1c-ad43-585879ef5934/dirinagetupikonopimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda74359-db22-4f4d-8f62-e757ee871642/gavuxefes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37370bec-4ea3-44b8-ac55-74b7c66660a2/54416325582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00919f1f-f028-42a4-912e-f8a2d86c53e5/33476933892.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_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 5084 bytes
SHA-256: af6c9b5ea6adc87d65593898ce44cd2261edb546b2a39606565b9792026d853d
font_01_sfnt_off0000f7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C9 10792 bytes
SHA-256: 180e1b74f4542e8cd68d70fc8dd5e6d464926fde8acb0dc3aeef8699c7d8e03e

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