Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c44d459b569098…

MALICIOUS

PDF

58.1 KB Created: 2020-11-20 08:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b23d793c8f51a5170cbe032b3a611e6c SHA-1: d7eba2953f19887d7fe21a9c17d874fd11fea344 SHA-256: 46c44d459b569098114f0cc5a4a91799164ac9f49c5f151282c9b38a9d0f6b7e
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffmen.ru/strik?utm_term=joy+to+the+world+piano+chords In PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/xejuxineredumojozeba.pdfIn PDF document text
    • https://porimejonawi.weebly.com/uploads/1/3/4/3/134368737/xuvekamuvoposu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wegugus/esl_fact_and_opinion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ac009b1-d8a7-4982-af93-731534441429/4th_industrial_revolution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/428f30a3-0cc6-400d-94f4-a19d414e850d/mobagexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0223c4b-c2b6-464f-a8a7-1140c353d28c/22045112382.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/totitig.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/79085632996.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zonugulex.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/10451102368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98e877c-bf06-44ec-abf5-fd406bb737c0/taxurukewisabosik.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/fillable_rst_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a075941b-cb96-4d8c-a32a-7012a072e319/manual_for_lg_vn220.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/sys_platform_is_not_defined.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA92 5344 bytes
SHA-256: 32b0ee225ed9d970e397f7043fafd82086365e3afd0864a630619eba672ebb39
font_01_sfnt_off0000bcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCA 9028 bytes
SHA-256: c9f6aeaa72fb3c0d03a0b7f8b0f981445a417925d6429ef9cd5b9580d6525297

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