Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad5e5d124d01133…

MALICIOUS

PDF

79.5 KB Created: 2021-02-24 21:04:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c7bf463da5b9a1d72f30660ac10b86ee SHA-1: 2c7e14c64bfc3a4aefb32eccc52c457d9249e66e SHA-256: bad5e5d124d01133642eeeee10546186027abce63613c7d5a221d69a7d785003
186 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, many pointing to disposable hosting, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious sites. The primary lure appears to be related to product information, as indicated by the 'lg hbs-730 bluetooth headset how to charge' keyword in one of the URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/award?keyword=lg+hbs-730+bluetooth+headset+how+to+charge PDF link annotation
    • http://bosemefawixuwov.mypressonline.com/vumevugis.pdfIn PDF document text
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/rebivuludixog.pdfIn PDF document text
    • https://goporurozabi.weebly.com/uploads/1/3/0/8/130874573/wurapokudeweti.pdfIn PDF document text
    • https://tamegafatukof.weebly.com/uploads/1/3/4/4/134400059/5381535.pdfIn PDF document text
    • https://vazejaxos.weebly.com/uploads/1/3/1/3/131382607/bb38df3b04399f.pdfIn PDF document text
    • https://gifiboluf.weebly.com/uploads/1/3/2/6/132681188/babosazajatasezok.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/jfVijgi/70196681178.pdfIn PDF document text
    • http://zodusen.22web.org/44161728303.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/penumutozetefiwexilu.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/xawoki.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/rhyming_words_dictionary_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/nv4500_rebuild_cost.pdfIn PDF document text
    • http://kodosalepixalan.epizy.com/xaravegez.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/nururorafizeduvapope.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BF 5520 bytes
SHA-256: 8a65c3cbf20e53178d87d3633f57ad483d8c0ee7e53a8069e4a70fadc2a4eb40
font_01_sfnt_off0000fcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB4 11232 bytes
SHA-256: 7be6266ef3fc3d9bbae0f4f74ab62aff87bfeb6c6163dbb11a8cc81eec219b92
font_02_sfnt_off000122f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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