Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6587e0318531e0…

MALICIOUS

PDF

41.2 KB Created: 2020-03-24 12:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 80598cb172becaa6221a36dec5af8a56 SHA-1: 8a537714f0e90b5d393646b79267915d14437a6b SHA-256: 6e6587e0318531e0d53d22a66fc7061f5108b48e7c13dc2b5e542226cc51dab8
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a PDF link farm. The primary URL points to a page discussing simple present tense, suggesting a lure for search engine optimization or to host further malicious content. No scripts were extracted, but the extensive link farm indicates a high likelihood of malicious intent, possibly for distributing further malware or phishing 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://misssoutheastpageantry.us/uploads/1/3/0/8/130814845/130814845.html#definicion+de+presente+simple+en+ingles+y+espa%C3%B1ol
    • http://desvauxdemarigny.com/uploads/1/3/0/6/130621075/gopaduwigisamo-rofugibig-vamesinom.pdf
    • http://mail.mixelle.net/uploads/1/3/0/7/130775511/putuj.pdf
    • http://thegutsygirls.net/uploads/1/3/0/7/130738845/8759076.pdf
    • http://aspenlifesettlement.com/uploads/1/3/0/4/130483540/marusozanexav_komemojol_zijuxefaluparu.pdf
    • http://webmail.crisisresidentialnetwork.com/uploads/1/3/0/7/130776490/c6264149c.pdf
    • http://renaultlifedesigned.com/uploads/1/3/0/3/130313262/jebixalasetama-revifudifeniked.pdf
    • http://www.thenewgeorgians.com/uploads/1/3/0/2/130289319/pekuzibamuxasi.pdf
    • http://greensideplumbing.com/uploads/1/3/0/5/130543575/4945966.pdf
    • http://www.thesalonist.net/uploads/1/3/0/5/130551212/ca797a02964314.pdf
    • http://angelajobin.com/uploads/1/3/0/8/130874416/4797786.pdf
    • http://lakelandfamilydentist.com/uploads/1/3/0/6/130621809/03269b1.pdf
    • http://lindatse.com/uploads/1/3/0/6/130605135/puvovibavuvuwape.pdf
    • http://www.kandyshopbeads.com/uploads/1/3/0/4/130435771/wapapedi.pdf
    • http://mail.allshorebaseballacademy.com/uploads/1/3/0/7/130776646/449064.pdf
    • http://nongress.org/uploads/1/3/0/4/130489361/910ff41d747e507.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743c.bin
a4a9f1a4f23fdca49883791835c3d55fe4f23d5b6f20542cc3480a2a232e4afe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743C 9076 bytes

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