Malicious PDF — malware analysis report

Static analysis result for SHA-256 060fa9f03886d186…

MALICIOUS

PDF

39.1 KB Created: 2020-03-08 08:29:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f545c5cf50e84157947291092880bd50 SHA-1: 576e8ac29cb6ada214cfb5980df890fb456a7473 SHA-256: 060fa9f03886d18623da7bca9b3475540a84814fcef2013025faa82e7670dc5c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text that appears to be a lure, referencing 'Fai impingement pain' and including a URL. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to a network of external sites, likely for SEO spam or to host 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://ybki5.bpmtc.com/uploads/1/3/0/6/130604014/130604014.html#fai+impingement+pain
    • http://paschal77.com/uploads/1/3/0/6/130620343/9632666.pdf
    • http://www.saragracemoments.com/uploads/1/3/0/7/130775782/4943507.pdf
    • http://vaporinklounge.com/uploads/1/3/0/7/130739070/puvir_lupol_pivun.pdf
    • http://huntersgrill10.com/uploads/1/3/0/5/130551765/pivawifi_zusuvoxon.pdf
    • http://www.bowsweet.com/uploads/1/3/0/3/130323588/7731493.pdf
    • http://wcscustom.com/uploads/1/3/0/3/130379082/c494eb4.pdf
    • http://ways2life.com/uploads/1/3/0/7/130738963/7404365.pdf
    • http://mail.humveeclub.nl/uploads/1/3/0/4/130477346/zatimukafisil-jogedu-fuwafijegamoz.pdf
    • http://caix.us/uploads/1/3/0/5/130540083/ginumadozedazi.pdf
    • http://www.theophilusministry.org/uploads/1/3/0/6/130604083/lepagop.pdf
    • http://www.myhiphope.com/uploads/1/3/0/2/130291707/1412fc.pdf
    • http://www.skinsoulbeautiful.com/uploads/1/3/0/8/130874134/mexuwuja_funalokurex_tuzemevotimam.pdf
    • http://fillibo.com/uploads/1/3/0/5/130538995/wamufubobogusav_kisumirofofixu_nuxalepowire.pdf
    • http://www.jakehandelman.com/uploads/1/3/0/8/130814909/309490.pdf
    • http://creativechecklist.com/uploads/1/3/0/2/130274338/xewedawa.pdf
    • http://wisconsinlimousin.org/uploads/1/3/0/2/130291350/f7f9b1c80cf9ea9.pdf
    • http://pineislandspices.com/uploads/1/3/0/5/130546977/dirafusiki_gojenotogamuxed_dabisipeziwewe.pdf
    • http://www.mysplendidfailure.com/uploads/1/3/0/5/130545557/xixanorivewamowewo.pdf
    • http://motorshoweast.com/uploads/1/3/0/5/130541424/406ba.pdf
    • http://fitfabulousandoverforty.com/uploads/1/3/0/4/130489914/7603924.pdf
    • http://yttconsultant.com/uploads/1/3/0/7/130738591/16ce55559.pdf
    • http://remarkhmc.com/uploads/1/3/0/6/130621213/5777d7b8.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_off0000742d.bin
c9754696922ec0e2b0bbba8ad1d10ee86af43730a205b3cc3fb731c31b768362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 6736 bytes

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