Malicious PDF — malware analysis report

Static analysis result for SHA-256 0496b80434aad87d…

MALICIOUS

PDF

36.3 KB Created: 2020-06-04 04:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 273f2e665e2a6c33f16f3b30373f9654 SHA-1: bd2be1937e57f1c6d092c22f0c4f6ab71db93d26 SHA-256: 0496b80434aad87d98509bc651549f9778fa6af1a4dec63223d8b785321ba356
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified as a PDF link farm. The primary URL, http://papricca.com/uploads/1/3/0/2/130272403/130272403.html#nude+lesbian+porn, and numerous others point to PDF files hosted on various domains. This suggests the document's purpose is to redirect users to a network of sites, potentially for SEO manipulation or to serve further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://papricca.com/uploads/1/3/0/2/130272403/130272403.html#nude+lesbian+porn PDF link annotation
    • http://shannonsk.com/uploads/1/3/0/7/130739416/5bdbefd5a9cf.pdfIn PDF document text
    • http://jobped.com/uploads/1/3/1/4/131409017/717e2ca2.pdfIn PDF document text
    • http://hcdtauranga.co.nz/uploads/1/3/0/5/130551208/4ed24d301fe.pdfIn PDF document text
    • http://1k8.undesirable.us/uploads/1/3/1/8/131857916/c4296eceb.pdfIn PDF document text
    • http://webdisk.churchandlife.org/uploads/1/3/0/5/130588248/5b71495.pdfIn PDF document text
    • http://mrshawkinsclass.com/uploads/1/3/1/6/131636625/kubeb_kowuze_nagutovi.pdfIn PDF document text
    • http://kacobgt.net/uploads/1/3/0/5/130551467/373f065c40a.pdfIn PDF document text
    • http://1t2.undesirable.us/uploads/1/3/1/3/131383673/2660851.pdfIn PDF document text
    • http://baudienstleistungen.org/uploads/1/3/0/4/130477083/103a41171.pdfIn PDF document text
    • http://hostmaster.costumeunderground.co.uk/uploads/1/3/0/5/130551559/1181918.pdfIn PDF document text
    • http://elecakecompany.com/uploads/1/3/0/5/130547116/3906365.pdfIn PDF document text
    • http://webdisk.findingsomethingbeautiful.com/uploads/1/3/1/3/131384142/kesixukosis.pdfIn PDF document text
    • http://papricca.com/uploads/1/3/0/2/130272403/terms.htmlIn PDF document text
    • http://papricca.com/uploads/1/3/0/2/130272403/dmca.htmlIn PDF document text
    • http://papricca.com/uploads/1/3/0/2/130272403/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zewatipite.files.wordpress.com/2020/06/52379013978.pdfIn PDF document text
    • https://lixamajifeki.files.wordpress.com/2020/06/23445337715.pdfIn PDF document text
    • https://zebutenot.files.wordpress.com/2020/06/farofuxelepexa.pdfIn PDF document text
    • https://mazagutote.files.wordpress.com/2020/06/60445718119.pdfIn PDF document text
    • http://lotkgyl.sites.looka.com/uploads/1/3/0/4/130476050/xujam.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6296 10196 bytes
SHA-256: 35b6c30b64ef979f7e4740f4d2a390c7b4ef1f643753465133041ca657c56a71

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