Malicious PDF — malware analysis report

Static analysis result for SHA-256 384f0ea464966317…

MALICIOUS

PDF

87.9 KB Created: 2020-12-09 18:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ede0003e655a064bfaa59ff52103699c SHA-1: 618f2b513c92af8630945246b2c1c5b66bdbc779 SHA-256: 384f0ea4649663176eb576e27d24daaa78bd56d9c0d3c177e0c4063cf0e33812
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document's primary purpose is to direct users to potentially malicious or SEO-manipulated content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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=why+hasn%2527t+goku+wished+for+immortality In PDF document text
    • https://xawewidijaxiju.weebly.com/uploads/1/3/4/2/134266046/e49c388edcbd5.pdfIn PDF document text
    • https://fudegedetet.weebly.com/uploads/1/3/4/7/134733785/d8d50.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/rikupa.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/63d8addbf5c776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc29ae5bdb33045eecd1eec/t/5fca4b11ec1d586fb39a1ccc/1607093010643/diba_boots_poshmark.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c00b9698b02c7f41e8ee/t/5fcda846a87f9f1b19f66abd/1607313478771/41199935354.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b629affbf90a66e985ea/t/5fc1acb0e18c5c478e3a7f43/1606528177100/bizezarij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a3ab6be-d595-4af6-9623-ec0211744476/3006715266.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/candide_voltaire_romana.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fb6b88c99b6d37a78a63/t/5fc3e9d2f8cdb769c65c1837/1606674899563/21624486475.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000fb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB67 3368 bytes
SHA-256: d8923077916fda9d9b837105792295c9b41fad7e6e138b3efd9eb4668d56c690
font_01_sfnt_off0001076b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076B 5624 bytes
SHA-256: ef2b2886dfa288b967b6279cb687ff536f7e57ab1e6faf27840cf5b1fbf70215
font_02_sfnt_off00011a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8E 10144 bytes
SHA-256: f3ae67f9b7f02004a8bf3613a4a9e096df24b9321eca0acb0ad5f61cb7b48065
font_03_sfnt_off00013d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5F 16060 bytes
SHA-256: 8f676b3be356e2086f34f7c81dd3575184be90372cbe0b4aaba7ba30be3377d2

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