Malicious PDF — malware analysis report

Static analysis result for SHA-256 8def1e562142c4ad…

MALICIOUS

PDF

48.0 KB Created: 2020-11-02 07:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: efaa99c30f75c12eb40b4ad22f8cf121 SHA-1: c223bd492e0e0122f1b9bd439fd89915f806f997 SHA-256: 8def1e562142c4ad06746b46f679166ff149e03f1817c111e9a85493e7d8588c
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and a critical redirector link to malicious infrastructure, suggesting a phishing or scam attempt. The document body, though obfuscated, contains text related to 'the real john ratcliffe pocahontas' and embedded URLs, which are likely part of the lure. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/aws?keyword=the+real+john+ratcliffe+pocahontas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413705/normal_5f97b4e0a7977.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/wasebowigug-kefum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f90f3b08679b.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/venasufifiseka.pdfIn PDF document text
    • https://xigodawi.weebly.com/uploads/1/3/4/4/134464905/caa56411.pdfIn PDF document text
    • https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/xatal-xulen-dafube.pdfIn PDF document text
    • https://virukuzababije.weebly.com/uploads/1/3/4/3/134350100/2e4db7a3.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/afacbb91-5d04-4bc3-b319-ea0f96983392/53170310228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edeb84dd-3eb3-4487-a365-1de07ef941ab/gimaliv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0099b943-4465-49e7-9bbb-4632ea2a5856/grupo_corcel_negro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858c710a-31e0-4752-88ef-947d91b1218f/40143758420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed86d421-f6db-49e0-b638-a935cd6fa214/71699441328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b0d6567-f959-41bb-b38f-454010e243f3/63787258188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/893f602b-7231-4079-bb19-9d725554326f/kereleguwisurosadulat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55d84cc6-6c80-4749-a53f-8ea358672d54/mijonasurolawujuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f375ce78-c719-4ae8-85bb-14aae83df534/jafizejosewakodezigibu.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_off00007f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 5128 bytes
SHA-256: 41980675ba451bf99c522e38ddc6194136b0ee3d58367f25eda24d064cb577c7
font_01_sfnt_off0000909b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909B 10116 bytes
SHA-256: 23b45fe57f018a549fe0db7b63b30b1503e7af3c87336d8f9bec663e023d5c86

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