Malicious PDF — malware analysis report

Static analysis result for SHA-256 e562607a67706c38…

MALICIOUS

PDF

60.6 KB Created: 2020-11-21 22:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b4e909790cdeab66c1b575545af9198d SHA-1: 234c2c47ad88bc2ba70002ed80ec811d189a9c0c SHA-256: e562607a67706c3852e58f5fc6d9282a3847b677535a816e63d272c5cdcfa263
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. The document's structure and embedded links indicate it is likely part of a link farm or SEO manipulation scheme to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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://ggtraff.ru/123?utm_term=section+8.3+dna+replication+study+guide+answer+key In PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/8ab10d80.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/3470289.pdfIn PDF document text
    • https://vokozigaga.weebly.com/uploads/1/3/4/3/134316184/3977639.pdfIn PDF document text
    • https://telexetobowu.weebly.com/uploads/1/3/4/3/134339901/6273140.pdfIn PDF document text
    • https://zezexofoji.weebly.com/uploads/1/3/4/3/134344156/96e7133fff0ae.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/49aee35c-aa8b-4852-80af-abd2ee739a43/energy_flow_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2927fb26-a92c-434f-bbe1-03b8ee0aa30d/49562602470.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/fifakozewoxoliwomikilep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd78696f-7788-47c6-ada0-c1ce897c924f/free_simple_rental_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/sony_handycam_dcr_sx41_owner_s_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e706e947-5617-447d-b7e7-669ff579d239/47212674618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c7a12e-8711-4ee1-9cb4-c9370ecf1d46/triangle-exterior_angle_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/anais_nin_little_birds.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/jugifavesozizanebezulabu.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_off0000b0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D3 5992 bytes
SHA-256: 0c843cb2b6d31a58f7f37dc8e0125efb972afb2296387c3fd571d1732832d124
font_01_sfnt_off0000c568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC568 9436 bytes
SHA-256: 1a065ae9757468950d9a01a3563f47845cb02c6ccfbeb732a356f9853a317a35

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