Malicious PDF — malware analysis report

Static analysis result for SHA-256 052d18e053ac7f13…

MALICIOUS

PDF

42.9 KB Created: 2020-11-03 05:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 747408d59506455998764470a62a9469 SHA-1: a9f5ca250dc87b2636310bc5c644f5979e72c11c SHA-256: 052d18e053ac7f138c7ee78816816f5f1ec132d84bc28a8bbd88cc624a1e266f
264 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains a large number of embedded links, many of which point to disposable hosting or known redirectors, indicating a link farm designed to distribute malicious content. The document body and heuristics suggest lures for credential phishing, specifically targeting MFA or payment information, and the presence of embedded URLs points towards exploitation for client execution. No scripts were extracted from this sample, but the overall structure and link farm nature strongly suggest a malicious intent to redirect users to harmful sites.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://gettraff.ru/123?keyword=fortnite+accounts+free+100%2525 In PDF document text
    • https://bizowubojixix.weebly.com/uploads/1/3/4/2/134265373/4409855.pdfIn PDF document text
    • https://renibopasuviwi.weebly.com/uploads/1/3/4/3/134305424/285bf69a8b075af.pdfIn PDF document text
    • https://wusunipusu.weebly.com/uploads/1/3/4/3/134320006/dodidogazijazebi.pdfIn PDF document text
    • https://vukijimox.weebly.com/uploads/1/3/4/3/134358494/ketosaxerizesa.pdfIn PDF document text
    • https://nifadajenekipib.weebly.com/uploads/1/3/4/3/134305148/vezosuwaj_gojovatin_vomalezupor_xawegobizulos.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/xumakomowi/licking_county_jail_inmate_search_newark_ohio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9320/6214/files/73531876935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e81d60-8ca6-4448-9821-3da748ddfc65/87736561372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5111/7475/files/pulsar_spoon_watch_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8626/4505/files/rusavu.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_off000067ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AD 5228 bytes
SHA-256: 6ba43624a25241508f27fa7d28ffffc436ae6d0f93d39eaebd30a52f9f502dac
font_01_sfnt_off00007975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7975 10884 bytes
SHA-256: e9de331e27a96fd9ac91fad6a924da0e15a45f051de71c0d5050f6c3d3a57e01

Open this report in the interactive analyzer, or submit your own file for analysis.