Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d04ea5bc70f02be…

MALICIOUS

PDF

40.0 KB Created: 2020-03-07 10:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2118da1794693e533e6bddbbe98c3246 SHA-1: dd0c9875ee92ff62bc3099fd4e954c2d4d327db0 SHA-256: 3d04ea5bc70f02bebb508289abd7ed734aac24b897b6a2daa902ca6912a9ea09
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The primary lure appears to be an 'Acuerdo comercial colombia unión europea' which directs users to a specific URL. The ML classifier strongly indicated maliciousness, and the PDF structure with numerous external links suggests a link farm or redirection tactic to host malicious content. No scripts were extracted from this sample.

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://beyondblesstravel.voyagerwebsites.com/uploads/1/3/0/2/130271099/130271099.html#acuerdo+comercial+colombia+uni%C3%B3n+europea
    • http://www.cameraclubofeagle.com/uploads/1/3/0/4/130488816/zexuvujabifajog.pdf
    • http://kraimgroup.com/uploads/1/3/0/4/130435710/4153953.pdf
    • http://newzealandcreativespacesstudioweebley.com/uploads/1/3/0/7/130740199/bovijidokinokusi.pdf
    • http://lfmultisports.com/uploads/1/3/0/9/130968933/jinaxivejolileja.pdf
    • http://www.artistrybykaylyn.com/uploads/1/3/0/6/130639296/dafavuveru.pdf
    • http://atyogautopia.com/uploads/1/3/0/6/130604574/9455465.pdf
    • http://tuvidaesahora.com/uploads/1/3/0/4/130435748/c25ad016d8bb.pdf
    • http://photoboothfancy.com/uploads/1/3/0/4/130488299/nomedijorejatotoda.pdf
    • http://mx.staceyapurcell.com/uploads/1/3/0/9/130968976/70e872244bc.pdf
    • http://moniqueyin.com/uploads/1/3/0/3/130323707/wefodus.pdf
    • http://insta-earn.co.uk/uploads/1/3/0/4/130435670/netejiwamedugukozab.pdf
    • http://mta-sts.mx.studioterapiebariana.com/uploads/1/3/0/6/130640190/9187390.pdf
    • http://rollitfrozencream.com/uploads/1/3/0/6/130605349/vutim-nadojuveraz.pdf
    • http://psychotherapie57000.fr/uploads/1/3/0/7/130776720/e8f719e6afba.pdf
    • http://bubblebag-australia.net/uploads/1/3/0/6/130605206/4054680.pdf
    • http://koncgroup.com/uploads/1/3/0/4/130476766/e1049.pdf
    • http://hostmaster.spanishamericanmission.com/uploads/1/3/0/2/130273814/zadozejagovejifuma.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_off000071e3.bin
fc3a58211862589d6b7670ec7c52104d897edef68ed370353bf6c39643b66679
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E3 8488 bytes