Malicious PDF — malware analysis report

Static analysis result for SHA-256 64fb37ad15cc113e…

MALICIOUS

PDF

46.8 KB Created: 2020-11-02 03:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f28bc2b8ef1acd856221ee48467c4976 SHA-1: d68bf19482994ed465ae4002e81cf5feaad719aa SHA-256: 64fb37ad15cc113ef8340fa0e25c5ac9dfb78ed00f8c0f6d9e905f94db70a32b
284 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF document acts as a credential phishing lure, impersonating Facebook to trick users into clicking links for free Fortnite accounts. The embedded links lead to a malicious redirector and a link farm hosted on disposable domains, indicating a phishing campaign. The document's structure and content strongly suggest an attempt to steal user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdf.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://cctraff.ru/strik?keyword=free+accounts+fortnite+2020 In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/dinabejowabojuxe.pdfIn PDF document text
    • https://vatalinonabalix.weebly.com/uploads/1/3/4/2/134234662/2901000.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/7845672.pdfIn PDF document text
    • https://lozatovetifeg.weebly.com/uploads/1/3/3/9/133999134/3960546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_5f8de28d0180e.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/xenemavurinap_jokepirewiteda_fijalezej_gemewije.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/lilonuxaf.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/gikeja-midodegutoveta-gipelin.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/xokunomafel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9774/9154/files/noderev.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/domepokuzozunawamofasov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8588/2048/files/80324947573.pdfIn PDF document text
    • https://s3.amazonaws.com/jufinanamek/cross_ethernet_cable_wiring_diagram.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4B 5072 bytes
SHA-256: fb77a3e5e1d77f90dc4354c2bc5dc81350149ca118ef828fe1ea0b73122aa9b7
font_01_sfnt_off00007e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E92 2140 bytes
SHA-256: 289854c0292170102eeea8cd8d9fa039b7e5adf06f71653ea533c14c4e2d2c34
font_02_sfnt_off0000886d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886D 11024 bytes
SHA-256: 5b1b19ec937a1f10effbee8a71918ad2b71047fbb986b24507fd1ec985750693