Malicious PDF — malware analysis report

Static analysis result for SHA-256 498cf1b51d6a1e63…

MALICIOUS

PDF

37.2 KB Created: 2020-07-09 11:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 1d08209ce5c963f693860b0fb96ddcfb SHA-1: d26d893f6c2b01a1abf65b02ff616065089b8c24 SHA-256: 498cf1b51d6a1e6302d0272e7369dcbe124cb384a44de0ebc019f131151cabb8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link, 'https://ttraff.com/pify?keyword=majesty+piano+chords+pdf', is identified as a malicious redirector. The document's content appears to be SEO spam, using the guise of "Majesty piano chords pdf" to drive traffic to potentially malicious sites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.com/pify?keyword=majesty+piano+chords+pdf In PDF document text
    • http://files.maggieabril.com/uploads/1/3/1/6/131606550/nevujuzojunod.pdfIn PDF document text
    • http://files.aledobandboosters.org/uploads/1/3/0/7/130775392/12765a8c4f93b.pdfIn PDF document text
    • http://files.bodymetamorphic.com/uploads/1/3/0/7/130739924/nogusidorabobevi.pdfIn PDF document text
    • http://files.thesportdome.net/uploads/1/3/0/7/130776100/lusabe.pdfIn PDF document text
    • http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.pdfIn PDF document text
    • http://files.wevalueourteachers.org/uploads/1/3/1/4/131408344/7984176.pdfIn PDF document text
    • http://files.cybersecurityinc.net/uploads/1/3/2/6/132681938/natuwafegaga.pdfIn PDF document text
    • http://files.lm3eagles.com/uploads/1/3/1/4/131406835/9082719.pdfIn PDF document text
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rebofowi.files.wordpress.com/2020/07/94001684663.pdfIn PDF document text
    • https://nidakurufe.files.wordpress.com/2020/06/zunirofugijilinitu.pdfIn PDF document text
    • https://rokonofivadi.files.wordpress.com/2020/06/35215407118.pdfIn PDF document text
    • https://juvudunun.files.wordpress.com/2020/06/rijefeketidesativipawewu.pdfIn PDF document text
    • https://vikefejemor.files.wordpress.com/2020/06/11676680159.pdfIn PDF document text
    • https://jizerorozuwo.files.wordpress.com/2020/07/pilirutefanafawevaladunul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demajez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.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_off00004cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF1 5184 bytes
SHA-256: 50ff5311dc5e58ce6b785c551da3c657f685563209d8a1e4db350292945003ff
font_01_sfnt_off00005e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 13264 bytes
SHA-256: a5b82cd62ed186c45b23befbf6715e5f90c13d5e3c61acdb0445e72e4e466fbd

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